Joon-ha always tells Hae-mi not to worry, that he can take care of things. However, in reality, there isn't actually anything he has gotten done right. Mun-hee can’t stand how Joon-ha is driven by Hae-mi, so she decides to act on her own to settle matters regarding Min-yong. Meanwhile, Min-ho pays a visit to Yoo-mi worried that Yoo-mi might fall for Yoon- ho. But when he gets there, Yoo-mi is nowhere to be found, and he comes to face her eerie father instead.

With the information that Bong-won Electronics stocks will fall sharply, Soon-jae looks for Joon-ha to sell their shares, but Joon-ha is sitting on the toilet suffering constipation... As Soon-jae takes the matter in his own hands, he rather ends up buying 500 more shares of the stock. Meanwhile, Min-yong gets Shin Ji’s Russia phone number from Min-jeong. As he ponders whether he should call her or not, he walks into a restaurant and hears a commercial song that reminds him of his memories with Shin Ji.

Hae-mi is always confident and the rest of the family members usually follow what she says. But there is one family member who just can’t seem to agree with her, and that’s Lee Min-yong! Min-yong ignores Hae-mi when she suggests the whole family gather around to make dumplings together… and the heat is on between the two. Min-ho is ecstatic about Yoo-mi’s invitation to her house to watch a DVD. But for some reason, Beom tries to stop Min-ho from going to Yoo-mi’s house.

Mun-hee is surprised when Soon-jae tells her she has an upset stomach after examining her, because she has never had an upset stomach before all her life. Joon-ha is surprised, too, and he becomes worried about the changes in his mom. Meanwhile, Shin Ji is back from Russia and she tries to sneak into the house to get a look at her son Joon-ee.

A fire happens in the girl’s locker room. Fortunately, Min-ho and Beom is able to rescue the girls in there in time, becoming heroes at school. But as time goes by, things don’t go as they expected. The toilet in the bathroom of Soon-jae’s house is clogged. Surprisingly, the person responsible for it is Hae-mi, who always seems so perfect. Mun-hee is unable to control her laughs when she finds out about this and tries to tell all the other family members about it.

Min-ho and Yoon-ho are brothers with nothing in common. Even after watching the same movie, while Yoon-ho can only blurt out incoherent adjectives, Min-ho is able to logically explain the story of the movie. One day, Yoon-ho gets into a fight in the neighborhood with other kids. As punishment, he is grounded and even banned from using his cell phone and computer, so he turns to Min-ho for help. Meanwhile, Min-yong finds out that Shin Ji has come back to Korea. He asks Min- jeong a favor to set him up to seem like he accidentally bumps into Shin Ji.

Mun-hee prepares eel for Min-yong, who seems to be exhausted lately. But oblivious of her intentions, Joon-ha eats up all the eel and Mun-hee gets angry at him. The two end up mad at each other and neither wants to apologize. It’s the rest of the family that has to face the consequences. Soon-jae scolds Min-yong to get the apartment back from Shin Ji. Min-yong, Shin Ji, and Min-jeong each insist upon their own rights and say they should take the matter to court.

Soon-jae, Mun-hee, Joon-ha, and Hae-mi decide to take a trip to Anmyeon-do Island for Soon-jae and Mun-hee’s wedding anniversary. Mun-hee is excited and begins planning things for the trip. However, Hae-mi keeps on changing her mind, Joon-ha follows her opinions, and Soon-jae keeps the new changed plans from Mun-hee, so the trip becomes a disaster from the beginning. Meanwhile, Min-jeong is annoyed by her ex-boyfriend Seong-ho, who keeps on charging his cyber money with Min-jeong’s cell phone number. What’s more, even her students keep pulling pranks on her, making things even worse.

Soon-jae laughs at Mun-hee for learning how to send text messages saying she’s wasting her time. But one day, Soon-jae receives a text message full of weird words from a middle-school kid who came to see him once as a patient. Hae-mi and Joon-ha pays a visit to Yoo-mi’s mom, who’s a friend of Hae-mi, on their way home from a work-out. At the house, Joon-ha accidentally drops a necklace in the hole of the wooden floor. But when Joon-ha tries to get it out, Yoo- mi’s father frantically stops him.

Mun-hee feels bad for Min-yong as she watches him being ordered around by Shin- ji to do small tasks, and tells Soon-jae about it. But when Soon-jae hears this, he takes it as a big deal and is about go to Shin-ji himself, so Mun-hee calms him down saying she’ll talk to her to leave Min-yong alone. Hae-mi and Min-ho have the perfect mother-and-son relationship. But Hae-mi is in shock when she finds out that her little baby boy Min-ho has a girlfriend and has even kissed her.

Hae-mi is such a cool woman that she even promises Joon-ha that she’ll buy him a new car if he loses weight. One day, Soon-jae and Hae-mi get into a small accident on their way to a seminar. Soon-jae gets angry and tries to get the other driver to cover for repair, but Hae-mi doesn't think it’s a big deal and suggests they just let it go. Meanwhile, Min-yong is worried that Shin Ji is having a hard time finding herself a job. Just around then, Min-yong’s school comes in need of a new alma mater song and Min-yong casually recommends Shin Ji.

Soon-jae happens to have a chance to meet with his long-ago crush Kyeong-hwa. He lies to Mun-hee that he’s just meeting some friends and leaves the house all dressed up. But he is busted by Mun-hee on his way taking Kyeong-hwa home. A rumor is spread around the school that Min-jeong is going out with Yoon-ho as she rides Yoon-ho’s motorcycle with him one day to school. To top it off, another rumor begins that Min-jeong is privately tutoring Min-ho as some kids spot Min-ho going into Min-jeong’s house on his way to pick Joon-ee up.

During their morning work-out, Joon-ha and Hae-mi spot Yoo-mi helping her mother Jeong-min walk. As Joon-ha tries to help by carrying Jeong-min on his back, he farts and Jeong-min wonders what Hae-mi saw in Joon-ha to have married such a man. In the meantime, after having too many drinks, Min-yong almost unconsciously directs his taxi to Shin Ji’s apartment and even sleeps in her room. Min-jeong spots this and can’t believe her eyes.

Soon-jae hears that Se-woon Construction is at risk and nags Joon-ha whether they shouldn’t be selling off their share of stock. But Joon-ha firmly denies and tells him to check the analyzed data from his computer. Soon-jae tries looking for the data himself as Joon-ha is sitting in the bathroom, but as he does, he finds something weird on the computer. Meanwhile, after hearing about the lost necklace from Yoo-mi’s house, Yoon-ho suspects a connection with the incident and Mrs. Kaesung-daek’s sudden disappearance.

Soon-jae’s family is in shock after Yoo-mi’s father is arrested as a suspect in Mrs. Kaesung-daek’s murder. They tell Min-ho to be good to Yoo-mi as she might be having a hard time. But Min-ho is actually afraid of Yoo-mi. Dae-guen, a friend of Soon-jae who has a cat-and-dog-like relationship with him comes to visit. Soon-jae becomes eager to get even with Dae-guen as he continues to make Soon-jae look bad in front of his family and nurses at the clinic.

Mun-hee becomes nervous as she hears her sister-in-law Kyeong-ae will be coming to visit from Canada. She’s afraid Kyeong-ae might tell the story she doesn’t want the family members to ever hear. Reluctantly, Mun-hee dresses up to her best in a nice outfit and full make-up, preparing to greet Kyeong-ae. Meanwhile, Min-yong dashes to the airport as he hears that Shin Ji is going back to Russia.

Min-yong is annoyed at how Hae-mi always seems to cut in whenever he speaks. He becomes determined to teach her a lesson and purposely begins to do the same to her. Meanwhile, Mun-hee is startled when she sees someone just like Mrs. Kaesung- daek through her window. She finds out that it is actually her twin sister.

Soon-jae always uses Joon-ha to resolve his own curiosities. When he wants to know if it’s cold outside, he sends Joon-ha out to the veranda to check it out. And this time, as he becomes curious of the taste of instant noodles poured with powdered red pepper, he tries to make Joon-ha to taste it. Meanwhile, Min-jeong thinks everything about Min-yong is so cool and handsome. She thinks his singing voice resembles the voice of Korea’s legendary singer Cho Yong-pil, and even his poor dancing skills appear to her like the moves of top singer Seven. Such delusions only seem to get worse.

Min-ho and Yoon-ho nag Hae-mi for a new computer, but Hae-mi doesn’t listen at all. But as Soon-jae naively pays $10 to the boys to get a song downloaded to his phone, they get an idea to lure Soon-jae for the computer. Mun-hee goes to the market with Shin Ji after getting upset because of Hae-mi. But the two run into Joon-ha and Hae-mi there, and the silent war between Hae-mi and Shin Ji begin from the moment they exchange hellos.

Joon-ha has an end-of-the-year-party planned with his college friends, and for some reason, the rest of the family implores him not to drink any alcohol. However, a beer-drinking contest happens to be taking place at the pub, and Joon-ha enters the contest to win over the grand prize sausage package. Meanwhile, Shin Ji oversleeps and is late to her commercial song recording session. When she gets there, the angry staffs tell her to just leave and Shin Ji fights back. But there is one guy who approaches her.

Hae-mi shows Soon-jae an English newspaper article about a Western oriental- medicine doctor. Soon-jae has no idea what the article says, but is embarrassed for him to admit, and pretends to understand what it says. Meanwhile, Min-ho is surprised when Yoo-mi says the capital of the United States is Los Angeles, but convinces himself that she must’ve just made a mistake.

Mun-hee asks Hae-mi for some money so she can pay back her friend the money she borrowed, but becomes upset when Hae-mi keeps asking about the details. She refuses to take the money Hae-mi offers and ends up taking money from Soon- jae’s wallet instead. As Mun-hee is at Shin Ji’s place to chat about what happened, she gets a call from Young-gi’s mom, who’s in urgent need of $3,000. Meanwhile, Yoon-ho is falsely accused for taking Soon-jae’s money, and is even accused as the person who watched porn instead of Soon-jae.

Mun-hee prepares a light meal for lunch as she’s exhausted taking care of Joon- ee. Soon-jae and Joon-ha complain about the food, so Mun-hee does her best to make it up at dinner. However, the family complains again at the table that her food doesn’t taste good. Meanwhile, Yoon-ho keeps riding his motorcycle even after Min-jeong pleads him not to. As a final resolution, Min-jeong runs off snatching Yoon-ho’s motorcycle key from him.

Joon-ha gets a hold of free movie tickets and asks Hae-mi to go, but Hae-mi can’t because of a seminar she needs to attend to. Then, Joon-ha happens to get Nurse Yoo from the clinic to go with him as she thanks him for carrying her heavy boxes earlier. Mun-hee panics when she learns that Joon-ha watched a movie with Nurse Yoo as she remembers an incident from the past. Meanwhile, Yoo-mi is invited to a friend’s birthday party, but is told to bring her boyfriend. Min-ho is delighted about the invitation, but Yoo-mi talks about how all her friends’ boyfriends are tall and mentions men’s heels.

Excluding Min-yong who is sick at the moment, Soon-jae’s family, the clinic’s nurses, Yoo-mi, and Beom go on a short trip to the countryside. Soon-jae pushes the family members to hurry up before leaving the house. Even after arriving at the place, he makes everyone clean the house when they try to play card games. Meanwhile, Min-jeong goes to see Min-yong as she becomes worried when she finds out he is sick. As she watches him sleep, she is startled by the sound of Shin Ji coming in, and slides down the pole to hide.