In the suburbs rich with greenery sprawls the massive performing arts school Saotome Academy. In order to grab ahold of the light leading to show business, a girl walks through the academy's gates... Her name is Nanami Haruka. Inspired to become a composer by the popular idol HAYATO, the story of her numerous trials and beautiful princes of music is about to begin...!

Aiming to pass the Shining Agency New Talent Discovery Audition held at graduation, the academy student's first assignment is the recording test. Unfortunately, Haruka, who is unable to write sheet music, is paired up with Otoya, who has no experience writing lyrics. Will the two of them be able to pass the assignment...?!

Thanks to being raised since she was a child by her music-loving grandmother, Haruka is confident in her ability to play the piano. However, for some reason, she is unable to play in class. Seeing Haruka shrink in response to her classmates' slanderous words and become increasingly depressed, Masato takes action.

Triggered by Masato's actions, his roommate and childhood friend Ren begins making passes at Haruka. However, Ren makes a habit of neglecting the academy's assignments. When Haruka learns Ren has received an ultimatum from the academy and may even be expelled, she begs him to turn in his assignment on time, but...?

Syo admires the teacher of the S Class and currently active idol Hyuga Ryuya. News of an amateur audition to co-star with him comes flying into the academy. However, due to Syo's fatal weakness, his odds of getting the part seem hopeless. When Haruka and her friends discover this, they formulate a plan to help Syo overcome his weakness.

Today is the day of Haruka's idol HAYATO's new song announcement event. Ignoring the concern of her friends, Haruka heads into town alone in high spirits, but she ends up lost just as her friends predicted. Just as she reaches her wit's end, she happens upon Natsuki and greets him, but Natsuki isn't his usual kind self...

Haruka has gradually become accustomed to life at the academy. Her grades begin to rise, and surrounded by friends, every day shines. However, she continues to carry doubt in the corner of her heart... Haruka finally discovers Tokiya's grave secret.

A summer overnight trip on the principal's private island in the South. Her classmates excitedly discuss the graduation audition, but still unable to close the gap between herself and Tokiya, Haruka's expression is gloomy. A strange young man appears before Haruka. What is the message he wants to convey...?

Their summer overnight trip over, Haruka and her friends find the deadline to select their partners for the graduation audition waiting for them. However, the more Haruka learns about their earnest feelings, the less she is able to choose a partner. The situation takes a turn for the worse, and the atmosphere at school grows increasingly awkward...

Everyone in the school is talking about how Haruka has been picked by six other people to be their preferred partner in the final assessment, but the stress is eating away at her.

Working and going to school takes its toll on Tokiya, and he winds up in the hospital.

Paparazzi have discovered that Tokiya is really Hayato, and infiltrate the school.

The principal of the academy cuts Haruka out of STARISH's debut, saying that she is not worthy to write their songs. Haruka visits her grandmother's house in the country to do some soul-searching.

After a successful debut, STARISH is now on the fast track. Later the President introduces STARISH to Pioneering Princes to teach them what professionals are like.

Haruka meets a prince in her dreams, but was it really just a dream?

Syo’s lands a role in the new Prince of Fighting special with this idol, Ryuya Hyuga. With a successful cd release and job offers members of ST☆RISH believe they are true idols, but Saotome informs them that they are not yet idols unless they win the ultimate award.

Hijirikawa has been invited to audition for the historical musical, Singing Swordsman of Justice. As people encourage him to try out a love scene in the script has caught him by surprise.

Otoya improvement has impressed the rest of the team, but his random disappearance leads some members to believe he is attending voice training classes. Later, when Cecil is asked to do an impression on a variety show, Otoya is concerned about this pop culture knowledge.

After being invited to be a model for a show sponsored by the Jinguji Group, Ren thinks of the hard times his brother, forced him to become an idol. But an unexpected event at the show may show Ren in a new light.

A woman’s cosmetics gravure advertisement job comes in for Natsuki. However, the client is clearly looking for “Satsuki” and not “Natsuki.” It seems “Satsuki,” who took over HAYATO’s event, would be a perfect poster child for the advertisement.

When he received a song from Haruka his heart’s desire was granted, and his wish to sing Haruka’s songs should have been fulfilled. Though he previously rejected the idea of becoming an idol, having observed the actions and passion of STARISH, he realizes something inside himself has changed.

Cecil disappears from the campsite. However, Haruka, who felt an infinite amount of potential in their seven-person harmony, begins composing a new song for the seven-member STARISH. Believing Cecil will return, the members of STARISH attempt to convince Shining, who tells them to give up on Cecil.

The “Uta Pri Award” has finally been announced. Their joy is short-lived as the other nominated idol group HEAVENS are given Haruka’s songs to sing. When the presidents of both agencies audaciously bet the dissolution of their groups on the award, STARISH is elated.

STARISH is threatening to disband, which prompts Haruka to write a song that will unite them all.

As STARISH prepares for the award show, Cecil has difficulties with the choreography. Syo offers assistance.