The story begins with our heroine Yuu Morisawa watching the Feather Star descend for a landing oblivious to the hefty workload at the crepe shop that her parents Natsume and Tetsuo are desperately trying to resolve on their own; a clumsy stumble into her childhood friends Toshio Ootomo and Midori Kisaragi later, the panicked Yuu votes with her feet using Tetsuo's scooter into a frenzied pursuit sequence whose zenith is four police cars and a helicopter along with Toshio on a bike. Oblivious to the chaos that she has caused with her mad dash through town, Yuu is enthralled with the Feather Star as it comes in for a landing; upon learning that she can see the Feather Star, the two alien cats Posi and Nega draw Yuu aboard where there is a dysphoric fantasy dream sequence that gives way to an encounter with the grateful alien Pino-Pino. Having some family government imparted at the breech upon arriving home sets the stage for the ultimate silver lining of Yuu finding that Natsume and Tetsuo are not hostile to housing the two alien felines who later lead her through utilizing her new-found magical powers; after some cryptic and perplexing trial and error, Yuu successfully initiates her first henshin into Creamy Mami.

Undaunted by the spanking received from Natsume last night, Yuu steals out of the house early in the morning in order to test her powers as Creamy Mami; while Yuu admires herself as Creamy Mami, Nega and Posi get into a divergent concourse over who is to blame for Yuu successfully sneaking away when Mami decides to drop in for a visit to see if Tetsuo and Natsume can recognize her before flirting with Toshio as she leaves. Meanwhile, Shingo Tachibana is dismayed to have it explained that Megumi Ayase and her manager Hayato Kidokoro are stuck in traffic along with finding that he has to resolve all the office politics caused by such a development until he encounters Mami walking around; a whirlwind of customization and instruction later, Creamy Mami is enjoined for a song whose lyrics the host withholds from her. Even if Creamy Mami successfully improvises a song and escapes the stampede of her newfound fans, Yuu is still stuck with a lengthy home commute whose resolution ultimately requires Toshio as a deus ex machina -- after Creamy Mami admonishes Toshio to behave dignity and respect unto Yuu.

Toshio's efforts to temper Midori's expectations of spending time with Yuu obfuscate the fact that Yuu herself is grappling with the disadvantages of being Creamy Mami -- the greatest of which is the narcissistic and fanatical Shingo Tachibana hell-bent on making Mami a star with his company as he orders his staff to find her. The panic Yuu is driven into at the sight of Toshio explaining Shingo his recent encounters with Creamy Mami while Midori tries to steal lustful glances at her illustrates the immense contention that Yuu undergoes as she tries to keep her double life as Creamy Mami a secret although Tetsuo and Natsume are picking up some piecemeal clues; nevertheless, Yuu unwisely decides to »debut« before Toshio so that she can explain things and nudge him toward the rest of his life but is shocked to find that Shingo has other ideas and is not taking no for an answer. Facing the backdrop of Shingo and Megumi ultimately having made the choice for her, Creamy Mami begins her career at Parthenon Productions in earnest.

The hysterical frenzy over Creamy Mami's debut song evenly divided between people buying the album and converging on the upcoming concert obfuscates that the magical idol is actually Yuu Morisawa effecting the mirage of being infirm -- although she almost blows it at the mention of her favorite dish. Yuu finds that the successful concert at Parthenon Productions as Creamy Mami does her no good against Natsume's zeal to impart her maternal perspective on her subterfuge or the impromptu test for sleeping in class; if those problems are not enough, Toshio's teasing and a collision into Midori costs Yuu her compact right when she is going to need it the most. Yuu's frantic search for the compact gets a big boost from Toshio explaining that Midori at the amusement park has it; while she successfully conquers the high-stakes aerial adventure necessary for its retrieval, Yuu ultimately ends up igniting Megumi's vendetta of Creamy Mami.

While watching Hayato Kidokoro tie himself in knots answering the telephones, Shingo revels in the prospect of Parthenon Productions flourishing and thriving when Nega admonishes against keeping Natsume and Tetsuo waiting for too long at home prior to reminding her about the reporters; it is the search for a place to cancel her henshin before beginning the home commute that Megumi obtains enough vicarious data to conclude that Yuu Morisawa and Creamy Mami are one and the same prior to taking revenge by searching for a way to prove her hypothesis. While Midori has gathered the courage to convey his affection for her the next day, he is crestfallen to have Yuu race right by him oblivious to nearly bowling over Toshio on her way to the Studio where following Posi's suggestion to kill time exploring lands Yuu right in Megumi's clutches whose plan becomes more likely to succeed by the minute along with the prospect of Megumi blowing the whistle on Creamy Mami. The ironic deus ex machina that enables Yuu to turn the tables comes in the form of Toshio and Midori finding themselves the vendetta of an unreasonable and persistent sentry whose chase ends where Yuu is being held; thanks to Posi and Nega helping with the back-end logistics, Yuu successfully extinguishes Megumi's hypothesis.

While Hayato and Shingo compare notes with Megumi about whether Creamy Mami will be punctual for an advertisement filming in a wilderness area reputed to have a black stag that has been visiting unto the locals bad luck, Yuu daydreams about being on a date with Toshio cured of his Creamy Mami addiction but causes a misunderstanding on the train when she speculates out loud Toshio and Midori's hidden motives for the outing; during the bus ride from the train station, Nega and Posi compare notes about the legend describing a magical stag that once resided on the Feather Star along with the pros and cons of emancipating the mystical ungulate from its subterranean prison. The astonished adoration of the black stag quickly gives way to it being time for Yuu to do her thing as Creamy Mami. The black stag's risky shortcut whose zenith is being trapped on a high rock ledge has the ironic silver lining of ultimately being the commercial Creamy Mami is to have done originally; now his former golden normal-sized self, the stag explains Mami his prologue and leaves behind the capability to manipulate the environment as he returns to the Feather Star.

Parthenon Productions receiving a heartfelt letter from a boy named Kenji facing a surgery that could prove just as deadly as the disease it is meant to treat tugs on Hayato's heartstrings while Shingo sees it as a professional opportunity as he charges Hayato a schedule change for Creamy Mami. The convoy of news vans provides Kenji the perfect excuse to go investigate the hullabaloo with his derisive neighbors; while Yuu tries to give her swim coach the slip after Midori intercedes for her, the actual situation is demonstrated to be somewhat more complex than meets the eye when it turns out that it is Kenji's yakuza grandfather Tamegoro Zenigami that needs the pep talk. Shingo and Hayato have quite the imbroglio on their hands: it is a public relations disaster if it is argued they have ties to the yakuza and also if they spurn a young boy's entreaty for assistance because of what he was born into. While the mirage Creamy Mami leads Kenji and Shingo through takes care of the other reporters, the tabloid reporter known as Snake Joe is not so easily dispatched. Snake Joe's attempt to pervert Creamy Mami's humanitarian compassion to his professional advantage becomes the forum for Kenji's former detractors to ultimately show their true colors after Mami asserts her innocence; a telekinetic juggling act from Posi and Nega instigates Snake Joe's retreat and Tamegoro's successful recovery.

Although she should be happy about its effect on the family micro-economy, the diurnal heat and a mob of impatient customers drives Natsume batty as she tries to entreat Tetsuo to take the family on a seashore vacation citing the effect it is having on Yuu who daydreams about swimming in the ocean before Nega snaps her back to reality as he and Posi prosecute an analytical concourse over the logistics and consequences of Yuu taking a vacation from her double life as Creamy Mami -- an incidence of which is that day when she has it explained that she is to conduct a joint concert alongside Megumi as Creamy Mami at Isohama complete with a brand-new high-tech mobile production van; later that evening, Yuu throws a temper tantrum in an attempt to defeat her earlier »gung-ho« exhibition about working while pointing out that Natsume was trying the same thing earlier only to have the annoyed Tetsuo affirm some very decisive family government. The road trip to Isohama the next morning becomes the forum for Yuu to ultimately learn the lesson »Be very careful what you wish for« when Natsume engages Shingo in a dangerous road race en route to the beach; if that is not enough along with the hefty workload of preparing crepes alongside Toshio and Midori without Natsume and Tetsuo to lead them through it, Yuu finds that doing her thing as Creamy Mami takes on a whole new dimension when she has to perform the joint concert not with Megumi but with her magical alter ego.

Creamy Crepes and Parthenon Productions behaving the proverb »Great minds think alike« on a beautiful day sets the stage for Toshio and Shingo's social missteps to get them in hot water with Yuu and Megumi. While Shingo is able to gulp down a lot of humble pie for not watching his words to Megumi, seeing past Toshio's immature human fallibility is the last thing on Yuu's mind especially when Toshio derails her concentration when jumping across a river. Be it to teach Yuu a lesson in appreciating her assets or to simply have fun, an apparition decides to envelop the sextet inside her mystic pseudo-reality of a spatially-enclosed forest with an empty house as the nexus. Yuu is shocked to find that the apparition has housed herself within Toshio to wield him as an escape vehicle only for Yuu to foil the attempted abduction; after Hayato explains her the prologue behind the apparition Andrea that abducts children that look like her late paramour, Yuu realizes the danger Toshio is in and rushes to the rescue. The ultimate silver lining during this interactive ghost story is that Andrea is merely misguided and has not a mean bone in her body although she does try her best to inhibit Yuu's proximity while she makes her escape with Toshio; all Creamy Mami had to do is to acknowledge how important Toshio is to her and understand Andrea's feelings.

A stampede of zealous fans eager to greet Megumi who is to perform a concert on the oceanliner being maneuvered into the port in preparation for docking means bad news for both Posi and Nega as the two cats are lost in the lurch during the hullabaloo; while Nega divides his energies between nursing his headache and getting his bearings as he computes his next move, a girl named Catherine successfully makes her escape from the ship much to her nanny's frustration. After explaining her prologue and her objective for being in Japan, Catherine sets course for her childhood home with Nega who tries to explain Posi the situation he is in; while Nega enjoys Catherine taking care of him in spite of the rough ride, Yuu is forced to suspend the search when it comes time for her to do her thing as Creamy Mami. The magic dream box now in hand thanks to some well-timed moves and cooperative circumstances, the problem now becomes how to smuggle Catherine back in under the nose of her very frustrated nanny; after Yuu leads the nanny on a wild goose chase, Nega and Posi explain Catherine the importance of believing in her own dreams and ultimately creating far grander dreams that transcend what can be kept inside a box as the ship sets sail.

A typical morning of Natsume boot-strapping her family for another day becomes the forum for an adversarial divergent concourse that drives Tetsuo to storm out of the house along with having it explained that Yuu has a significant prologue of seeing her parents do this; Tetsuo is not merely cooling his heels as he thinks things over prior to reconciling with Natsume -- not during the calendar week in which it becomes apparent that the workload is too great for Natsume alone. Upon discovering that Tetsuo has returned to his prologue as a toushozoku, the problem is not so much the rendezvous between Tetsuo and Natsume -- nothing that an impromptu Creamy Mami concert cannot take care of -- but for the two apostate motorcyclists to see the light on the folly of their recent martial conduct. Tetsuo's intercession for Creamy Mami from some frenzied fans becomes the ultimate forum for Tetsuo and Natsume to relive their collaborative prologue as toushozoku -- and the owners of Creamy Crepes along with being Yuu's family government.

The approach of a Category II typhoon becomes the forum of an anxious Natsume forcing the reluctant Tetsuo into an impromptu honey-do list of emergency home repairs while Yuu teases him at school commute inception; while Yuu divides her energies between the school commute and splashing through the puddles along the way, Shingo and Hayato are discussing the commercial that afternoon involving Creamy Mami when Hayato goes into a story of how there are ghosts in the studio where Megumi demonstrates some of the disadvantages of showbiz. Yuu's school cuts classes short because of the typhoon which affords plenty of time to rush to the studio where an unscrupulous news reporter named Snake Joe takes advantage of Megumi's disgust with the office politics by killing the electricity in the building; neither gets very far when a ghost panics them into fainting. It ultimately falls on Yuu to save the day by photographing Megumi and Snake Joe red-handed in the generator room prior to restoring the power; Yuu's heroism does nothing to save from being in very choppy water with Natsume and Tetsuo being anxious for her safety.

While out and about at the amusement park one afternoon, Toshio races ahead to secure the optimum perspective of the upcoming Creamy Mami concert while Yuu leads Midori through a roller coaster ride in which he faints; while taking responsibility for Midori is relatively simple and straightforward, finding a private location to conduct the henshin into Creamy Mami proves to be a challenge for Yuu -- especially when a secluded location is a house of mirrors that causes the henshin to summon a mirror image doppelganger that wastes no time causing an uproar around town. Astonished at the lack of modesty demonstrated by the doppelganger and anguished at the effect it has on Toshio who eventually begins to put two and two together, Yuu decides to get into the act herself after heeding Nega's recommendation to have a mirror on hand; a frenzied pursuit sequence later, Creamy Mami ultimately corners the doppelganger into an iconoclastic strategy that brings about her voluntary return to the mirror.

Yuu recounting a conversation with her father Tetsuo about the stars in the sky and the fable associated with the decennial Dream Comet gives way to a news broadcast about the Dream Comet as Yuu finishes making a crepe for Midori that sets the stage for Yuu to prosecute a divergent concourse regarding the existence of Mr. Dream with Toshio who plans to observe the Comet that night with Midori. Later that evening while staring up at the sky, Yuu explains her childhood prologue with Toshio whose detection of the Dream Comet becomes the forum for Mr. Dream to manifest himself before the astonished Yuu as he explains the adventure ahead of her that night. Yuu's adventure with Mr. Dream begins with some elements of »Alice in Wonderland« that enable Toshio to spot Yuu well enough to give chase after her; while unable to follow Yuu to the dimensional area where the secret clubhouse is located, Toshio's anxiety for Yuu's welfare is a potent deus ex machina that ultimately adds enough elements of »Cinderella« to bring the evening excursion to a conclusion that leaves Yuu feeling satisfied with a healthy perspective of the circumstances; even if the complex logistics of reality do not always work out in her favor, Mr. Dream leaves behind a wonderful consolation prize for Yuu: a Toshio that happily accommodates her childish dreams.

The nocturnal quiescence of Creamy Gaoka is shattered when an alien known as Peeno crash-lands on Earth to begin his Woofnick genocide mission -- an arduous task that can only be accomplished on a full stomach. For Posi and Nega, Natsume does not understand or care that the two cats cannot have eaten the five jars of specially-made jam by themselves as she gives chase in spite of Yuu's attempted intercession; fortunately, Grandpa Yoshino is far slower in jumping to conclusions as he shares some insight as to Yuu's situation. Tetsuo and Natsume accidentally using spicy batter to make the crepes Yuu delivers as an apology obfuscates Grandpa Yoshino being in a bad way because of his identity as a Woofnick; even with Nega explaining the situation with the Woofnicks along with Peeno's goals, Yuu discovers that catching Peeno is far easier said than done even though Midori succeeds in capitalizing on Peeno's appetite. While standing guard over Grandpa Yoshino all night only to find that the damage is already done, Yuu is ultimately forced to fight Peeno as Creamy Mami to avoid becoming a Woofnick herself.

Even though he has royal responsibilities that take precedence over it by far, the prince Ayumi exerts a great effort to reconnect with his childhood friend Toshio who is practicing his soccer skills with Midori when Yuu arrives wanting to join in; Yuu is not as practiced in soccer as Toshio and loses control of the ball. Toshio's ball now in hand, Yuu encountering Ayumi sets the stage for a sequence of reminiscing before the sentries force the kids into a hasty retreat. Now at the wrecked ship, Yuu happily runs around exploring the ship with Midori on her heels before deciding to search for the treasure in earnest; things go sour when Midori inadvertently knocks the ship loose from its resting place where the waves can easily capsize it. Yuu finds Ayumi's treasure but is ultimately forced to forego it to save everybody as Creamy Mami when the ship begins sinking; as far as Ayumi is concerned, the opportunity to spend time with Yuu and Toshio is a far greater treasure than the gold statue he had intended for her.

Posi and Nega scolding a frustrated Yuu for procrastinating on an art assignment she was charged sets the stage to have explained her a forest fabled to enable anybody to draw with a great deal of skill; desperate to avoid the turbulence for not doing her homework but also curious, Yuu decides to set course for the forest where Midori explains Miya Nakahara who prosecuted a prolific year-long art career a decade ago at only 13 years old before disappearing. Upon having it explained that Miya will catalyze sincere efforts to develop the artistic skills of those that draw in the forest, Yuu races off into the forest to try her fortunes only to find that success can have far more dire consequences than failure when she encounters the Unicorn Deshi who leads her into a face-to-face encounter with Miya in a pseudo-reality that she cannot easily leave on her own when the Unicorn Meijin takes her prisoner with the exhortation to reside in its world with Miya. Even though Miya yields to her conscience and decides to help Yuu return home, it ultimately does nothing to challenge the bitter reality that Miya is in a purgatory not unlike what Nega and Posi forewarn Mami of if anyone ever pays audience to her henshin.

While evading the wrath of the frustrated production staff for interloping onto the production set and leaving a trail of destruction as she is being chased around, Zashikiwarashi searches around for another playmate before settling upon Yuu who is having a blast. While the mythology associated with Zashikiwarashi expounds upon her bringing happiness to the homes she visits, such is a long way off when Zashikiwarashi shows up the adults who then give chase after her although Zashikiwarashi herself means no harm and has not a mean bone in her body -- not with how she behaves toward Posi and Nega along with enthralling the kids with her charisma. Galvanized by Zashikiwarashi's prologue of boredom and loneliness, Yuu lends Toshio and Midori as surrogate friends as she decides that an engagement with Creamy Mami is in order -- a decision easier said than done with having to retrieve the wand which appears out of reach. True to Hayato's anxious admonition, Zashikiwarashi does act out her impatience for Creamy Mami which interferes with the show but also has the ultimate ironic silver lining of celebrating Megumi who has been marginalized in favor of Creamy Mami.

Shingo Tachibana completing his work commute excited about the debut of Creamy Mami's new song quickly gives way to neurotic despair upon having it explained that the star of the show is stranded at Atarajima with Hayato. Shingo is naturally none too pleased at the news; a caustic castigation later, Hayato finds himself led through a multi-modal tour de France across Japan that starts with a flight to Osaka and a ride on the Shinkansen that ends up at a dead end in Mishima right when Megumi successfully placates Shingo into eating lunch. Driving into the savage vendetta of a neanderthal trucker that forces them off the highway and onto a wooden bridge whose collapse gives way to a wild voyage on a passenger ferry at Hakone has the ironic silver lining of the journey ultimately getting a big shot in the arm from some kids on a field trip; a couple of well-timed henshins and Toshio performing his contingency messenger role along with a timely thunderstorm later, Creamy Mami stylishly arrives at the concert fashionably late thanks to Megumi.

The task of sorting fan mail becomes anything but a pedestrian routine for Hayato Kidokiro when he discovers a ring in a letter meant for Creamy Mami that decides upon him as a suitable beta alternative; while Hayato divides his energies between his work and removing the ring, the Tongari crown prince is led through a visit to Yuu's school where Yuu is filmed presenting flowers to his father the King oblivious that Tetsuo and Natsume would have liked to witness that event live. Toshio's zeal for a photograph with Creamy Mami becomes the forum to have it demonstrated that the Tongari crown prince is being forced to forfeit his life as a human sacrifice for having sent the ring to Creamy Mami unless the ring is retrieved -- a task that is read to mean that Hayato must lose a finger . . . and would have if not for Posi and Nega's »Stop that at once!!!« telekinetic onslaught that sends the sentries packing. Galvanized by the scope of the Tongarian cultural imbrogilo that has been visited unto him, it ultimately falls on Creamy Mami to improvise a deus ex machina as the frustrated sentries and the sinister shaman converge upon Hayato with mortal designs.

While Creamy Mami does her thing in the studio, Megumi wonders when the next vacation will be when Shingo's father signals an interest in returning to Japan to celebrate Shingo's birthday and address his poor marriage prospects. Megumi inquires the nature of the phone call in an attempt to help Shingo define the imbroglio he faces before leaving a »Stop being so obtuse!!!« slap across the chops as a parting gift. While Megumi computes how to wield Toshio in her counterstrike subterfuge against Mami and curry Governor Tachibana's favor in the hope of marrying Shingo, Yuu is making time with Toshio when she strikes it rich in a lottery to secure a pair of amusement park tickets; for Yuu, the circumstances involuntarily force her into an encounter with the resentful Toshio who decided for the party after she mistakenly lashed out at him. This along with Shingo and Megumi's adversarial subterfuge ultimately ignites a three-ring circus that becomes the ironic evening entertainment much to Snake Joe's delight; while Megumi tries to salvage the damaged first impression, Toshio sees the light as he leads Yuu through the park.

A chaotic circus results when the musical knave PuppuKupuu decides to practice his flute playing one night; aside from insulting the »Silence is golden« nocturnal ambiance, PuppuKupuu's flute playing has the side effect of causing all electrical and electronic devices in the vicinity to malfunction to terrifying and perplexing effect. Toshio is at a loss for why Midori has decided to help PuppuKupuu find his way home as he rushes onto the scene showing no interest in listening to no for an answer to the two boys' company with him to the upcoming Creamy Mami concert. Even after Yuu castigating him for disrupting the concert, neither Midori nor PuppuKupuu is able to make the cause-and-effect correlation between the flute's music and its consequences. The ultimate silver lining of the divergent concourse Midori prosecutes with PuppuKupuu over Yuu is that it leads to the use of a partially-constructed building as an acoustic amplification antenna that enables PuppuKupuu to briefly levitate in the air; a slight magical boost from Creamy Mami later, the levitation becomes a flight home.

While Creamy Mami's career continues to thrive and flourish, Shingo soon finds that there is a price to be paid for taking Megumi for granted when Snake Joe explains Megumi the interest in her LP Productions has taken; after observing the concourse, Yuu sets course for home where Midori explains her the idea behind hikinuki and the damage it causes alongside Toshio who adds that the whole thing is up to Megumi. Firmly resolved to extinguish Snake Joe's subterfuge, Yuu approaches Shingo with her concerns the next day only to find that Snake Joe is a step ahead of her as he forces Shingo's hand and backs him into a corner; if Shingo's complacency about Megumi's loyalty and his obliviousness to Megumi's frustration are not enough, Megumi's brinkmanship gambit to scare capitulation of Shingo ignites an adversarial divergent concourse with resolution and epilogue uncertain. While Snake Joe tries to wield Megumi's ambivalence to his advantage, Yuu finds that the ultimate deus ex machina to resolve things lies in Shingo and Megumi's collaborative prologue involving the »Parasol of Stars«; a scavenger hunt for clues across town and a magical intercession from Creamy Mami later, Megumi and Shingo reconcile their differences.

Creamy Mami has it explained that she is to audition alongside Megumi for the movie »Northern Animal Family« whose central plot is the relationship the protagonist has with a bear; if successful in acquiring the protagonist role, the actress's career is sure to flourish. The audition the next morning illustrates that Creamy Mami is excellent for the part since most of the other actresses panic near animals; while Mami does her thing at the auditions, Posi and Nega find that Maru the Bear is not in a good way since his trainer Kaoru works for people that think of Maru as a thing rather than a living creature. The stormy office politics of Maru taking an »Enough already!!!« siesta on stage prompt Kaoru to steal away into the night with the infirm ursine -- her course set for Hokkaido. The chase after Kaoru and Maru that ensues has the ironic deus ex machina of being the central plot of »Northern Animal Family«; although she has a divergent concourse with Mami who thinks that Maru should first receive medical attention before journeying to Hokkaido, Kaoru ultimately proves herself as the ideal candidate for the movie with her altruistic concern for Maru that successfully demonstrates her case.

A particularly busy afternoon with a bunch of impatient customers becomes the forum for demonstrating the impact of Yuu's double life as Creamy Mami visits unto Tetsuo and Natsume as they frantically endeavor to flawlessly coordinate and fulfill every permutation of crepes barked at them; while Toshio and Midori compute the exhortation of helping Yuu's parents part-time, Yuu has just finished her commute to Parthenon Productions in time for an impromptu concert as Creamy Mami that becomes the preamble for a medley of different activities that comes across as indifference. Yuu's fury at Toshio pejoratively comparing her to Creamy Mami causes Yuu to lash out at Nega and Posi before marching over to Shingo with a hasty decision to sit out the NPB Pop Festival before Megumi leads her to an autographing session followed by a »Mind your tongue!!!« spanking from Natsume annoyed at her persistent attempts to call Toshio; the next morning, Yuu acknowledges her fallibility as she rushes off to school resolving to reconcile with Toshio at the Festival where she fruitlessly searches for Toshio. Yuu's fruitless search also has the ultimate irony of inadvertently leading Toshio right into the midst of her henshin to Creamy Mami.