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.

HEAVENS think that the competition is in the bag. Haruka must make a life altering decision.

Shining Agency's idol group STARISH, composer Nanami Haruka, and senior idol group QUARTET NIGHT have been making steady progress expanding their field of activity. In the entertainment world, artists and idols are beginning to enter the selection process to become the opening act of "Super Star Sports," also known as Triple S.

When Shining refuses to enter STARISH in the Triple S concert, the members of STARISH trust in their potential and agree to work harder than they ever have before. Meanwhile, STARISH and NIGHT QUARTET head to a resort to film for a variety TV show.

Shining puts together the Cross-Unit Project for STARISH. The first phase features a rock musical starring Otoya and Natsuki. Though they're both overflowing with enthusiasm, they're given unexpected roles. As they dive into rehearsal to master their roles, they find their enthusiasm gets them nowhere...

When Haruka arrives at the shooting location of an upcoming film starring Ai, his costars Natsuki and Syo describe the perfection of his acting. However, Ai is unable to understand one of his lines. Given his perfect performance, the others find this statement strange. That night they discover Ai's greatest secret...

For Cross-Unit Project phase two, Ren, Syo, and Cecil are tasked with producing a smart phone commercial. However, all three insist on their own idea and can't manage to agree. Haruka is worried about the boys, and the deadline approaches ruthlessly...

Haruka's new job is composing a new song for Camus, who is performing at the opening ceremony of the Shining Tower. To learn more about him, Haruka asks to accompany Camus to work, and he agrees on one condition. Will Haruka be able to write a song to satisfy Camus, who is perfect in every way...?!

While working on his new solo song, Ranmaru increasingly devotes himself to his work with QUARTET NIGHT. However, Haruka and her friends sense Ranmaru is pushing himself too hard. Meanwhile, as Ranmaru gazes from a distance at the construction of the new Triple S stadium, nostalgic and bittersweet memories are on his mind...

Masato and Tokiya's job for the final phase of the Cross-Unit Project is performing a new song live on an influential music program. With the hopes of STARISH and the entire Shining Agency riding on their shoulders, they tell Haruka they will write the song's lyrics first. However, things don't go as well as they hoped, and they find themselves getting stuck...

Reiji, a man capable of completing any job flawlessly, is the Shining Agency's busiest idol. Haruka visits him between jobs to hold meetings with him. As they spend time alone together in his car and under gazebos at night, Haruka draws closer to his true nature hidden behind his smile...

As QUARTET NIGHT prepares for the Triple S opening artist screening concert, they head off on a trip with Haruka to work on their song. Shining Saotome's orders are to create a "number one song that will make them shine." However, the members of QUARTET NIGHT have never worked with a songwriter to compose a song before. With no precedent to lean on, what kind of song with they produce...?

The Cross-Unit Projects concludes with great success. Though the international focus on them is growing, STARISH still hasn't received an answer regarding whether or not they'll be entered. When they hear the high quality of QUARTET NIGHT's new song, the anxiety they feel without Haruka peaks. However, the time they've spent together since the birth of STARISH leads them to a certain conclusion.

When Shining acknowledges STARISH's revolution when they spur QUARTET NIGHT into action, he allows them to enter the Triple S opening artist screening concert. Viewing STARISH as their greatest rivals, QUARTET NIGHT makes a request to Haruka in preparation for the concert.

After QUARTET NIGHT's masterful performance, STARISH rushes onto the stage they've dreamed of performing on to challenge their rivals and deliver their voices to the world. Together the idol groups STARISH and QUARTET NIGHT have started a revolution of love, but an unexpected development waits for them in the final moments of the concert...

When QUARTET NIGHT is chosen to perform as the Triple S Opening Artist, they decline the opportunity after STARISH and HEAVENS give equally compelling performances. Raging Otori and Shining Saotome propose another musical showdown to determine the opening artist between the three groups in which all three of them must sing songs written by Haruka! Who will win the decisive concert and the honor of performing at the Triple S?

The members of STARISH and HEAVENS are shocked to learn they will be singing duets with members from the other group to prepare for the decisive concert. Meanwhile, QUARTET NIGHT appears to be experiencing some discord of its own.

The top starters of the Duet Project are Tokiya of STARISH and Eiji of HEAVENS. Tokiya and Haruka approach their unknown rival with nervousness, but surprisingly they're met by the voice of an angel...

The second group of the Duet Project is Syo of STARISH and Yamato of HEAVENS. Syo is excited to sing a duet with Hyuga Ryuya's younger brother, but a powerful rivalry with his older brother surges through Yamato's heart.

The third duo of the Duet Project are Cecil of STARISH and Shion of HEAVENS. Trying to follow up on Tokiya and Syo's success, Cecil aggressively approaches the project, but Shion closes off his heart more and more as though in response to Cecil's passion.

The fourth duo of the Duet Project are Ren of STARISH and Van of HEAVENS who are also slated to play rivals in a TV drama. When Van begins aggressively pursuing Haruka, Ren heads straight into battle with his own passionate feelings hidden in his heart.

At their meeting for the Duet Project, Nagi's casual remark causes a sudden change in Natsuki's positive behavior. From Natsuki's words and past videos, Nagi realizes his secret...

Due to their inborn earnestness and similar backgrounds, Masato and Kira both sense how compatible they are with one another. However, while work on the song is going smoothly, Kira fears something is lacking. Meanwhile, Masato receives word from his family...

The theme of Otoya and Eiichi's song is a "soul-shaking song." When Eiichi explains to Otoya that he must face his true self that exists deep inside his heart to do so, he stoically engages in writing the lyrics. However, gradually he becomes less and less like himself.

Leaving behind a completed duet, Otoya disappears. Having been exposed to a side of Otoya they'd never known before through his voice, as the members of STARISH search for clues that will lead them to Otoya, they arrive at the truth behind his personal history.

After reuniting in the sunflower field, STARISH successfully makes it to their live broadcast while becoming the talk of the town. With the Duet Project finished, STARISH and HEAVENS are set to start working towards the Decisive Concert. However, a plot to drive them towards despair is approaching.

The emotions and hoeps of STARISH, QUARTET NIGHT, and HEAVENS are illuminated by a morning sun rising in a clear sky. As Haruka prays for similar things, the Decisive Concert is about to begin.

QUARTET NIGHT and HEAVENS have finished their own brilliant performances, which leaves only STARISH. Will their performance match the passion of the other two groups? Who will be chosen to perform as the Triple S opening artist?