In order to chase after the "aspiring high school student" that he met while he was in middle school, Yuta Hoshitani enters the prestigious Ayanagi Academy, a music school known for its intensive training. Knowing that the highschooler was a student from the Musical Department, he challenges its super, difficult audition. However, standing right in front of Hoshitani's dream is a group who reigns at the top of the school, examining him with shine in their eyes - the Kao Council!

After becoming a part of Kao Council member Otori's "Team Otori", Hoshitani is able to continue on as a Musical Department candidate. However, despite the fact that there's nothing wrong with their abilities, his teammates Nayuki, Tengenji, Tsukigami, and Kuga each have some kind of problem. Even with such a heavy feeling in the air, Otori starts practice in an unusual way - "Come on boys. It's time to play!"

Through the first practice, the difference between Hoshitani's abilities and his teammates' becomes clear. As a result, he begins to practice on his own everyday while receiving support from Nayuki. However, he's still unable to keep up with the harsh practice. In the end, the young noble of the theatrical world Tengenji has harsh words for Hoshitani - "For the sake of the team's survival, leave the team." Now under pressure, what will happen to Hoshitani? And just what is the furious Tengenji's secret?!

As Hoshitani continues to do his best, he begins to move the hearts of Team Otori's members. However, Tsukigami is the only one who refuses to try to work alongside them. With the pressures of being a "thoroughbred from the musical world" and an inferiority complex due to his older brother, Tsukigami suffers alone. After learning of Tsukigami's distress, Hoshitani is unsure of what to do. And at last, the star of the Star Teams, Team Hiragi appears!

Just as the Newcomers' Debut Performance (the upcoming test stage for the Musical Department candidates) approaches, Team Otori finally begins to work together. However, Hoshitani's skills are still lacking, causing a big issue for the team. At the same time, they witness Team Hiragi's performance. Overwhelmed by their perfection, Hoshitani suddenly feels uncertain.

It's finally time for the Newcomers' Debut Performance, a rigorous testing stage where half of the teams will be no longer be Musical Department candidates. Unfortunately, Hoshitani and the others still feel anxious about their performance and there are speculations that the motley Team Otori will definitely be cut. In order to support his students, Otori plots out a secret plan. As a result, what will be Team Otori's fate?!

Hoshitani has safely finished his first semester as a Musical Department candidate. However, the next testing stage is just ahead in the second semester. As such, under Otori's suggestion, Team Otori decides to hold a sleepover training camp during their summer vacation. Visiting a villa in the mountains, what awaits them - An abandoned house? A bear? Or maybe some unexpected people?!

As the second semester begins, an overview of the Ayanagi Festival performances is immediately announced. Hoshitani and the others are told that each team is free to perform whatever they want for the test stage, creating much to think about. Meanwhile, after witnessing Team Otori's reckless Newcomers' Debut Performance, one of the members of Kao Council reveals his disgust and begins to move quietly.

With the Ayanagi Festival performance approaching, Team Otori strives hard during practice. Then one day, Hiragi calls out to Otori. He tells him, "Team Otori's presence is affecting the traditions and standards of Ayanagi Academy", forcing Otori to make his choice. To make use of one's genius or to help the five whose future has begun to shine like stardust. When faced with the decision, Otori and Hiragi's hidden past is revealed.

Out of nowhere, Otori leaves the school. Having not been told anything about it, Hoshitani feels a sense of confusion and resentment, and doubts swirl in his chest. However, the test stage does not wait! Killing their anxiety, Team Otori moves onwards, else they will gradually fall apart, if they kept thinking about it. Under such circumstances, Nayuki in order to cheer Hoshitani up, went on an outing to play.

Team Otori, the 5 of them began to move on. One day, Hiragi, issued extracurricular activities on the field of musical profession. Hoshitani and the others are to help out on the site as staff - what, it's the prince of the Musical World! On the other hand, Hoshitani's mind is still remains caught up. "Otori-senpai, why did you left us..." It was discovered, the reason was in order to protect them!

Overcoming his anxiety, Hoshitani celebrates the day of Ayanagi Festival. However, due to the typhoon approaching Ayanagi Academy. There's the heartless decision to abort Team Otori's program as the Outdoor Stage Venue collapsed. "The musical that Otori-senpai taught us, I want tons of audience to watch it." Where will Hoshitani and the others' dream head to? The stage of the youth, the final chapter! For us, the way to give up our dreams, we don't know that at all!

A new year arrives as the school festival ends. The season has come as Kaou-kai members leave their jobs after doing their final duties. Each musical team prepares for the final big performance for the year, Graduation Ceremony, to show their gratitude. After Itsuki Ootori left Kaou-kai during the school festival, the ex-Team Ootori is not qualified to participate while they are still students of the music department. In the midst of these events, Yuuta Hoshitani and the others make a decision...

Upon the broadcast of Starmyu 2nd Season's final episode on Tuesday, it was announced that it will get a special episode airing on June 27. It will be airing a 27-minute duration of the musical parts.