The story starts when Yuuta Hoshiya enters Ayana Academy, a school focusing on show business activities, specifically music. The academy has a group of the three students with the highest grades in the musical department, and they are known as the Kao Kai (Cherry Blossom Flower Association). This organization stands at the top of the pecking order within the academy.

The shortcut to entering the musical department is to enter the Star Frame class, which is directly taught by the members, and to be recognized by them. Unfortunately, due to their own problems, students Tōru, Kaito, Shou, Shuu, and Yuuta are all struggling to even remain candidates for the musical department. By a stroke of luck, however, the five are spotted by Kao Kai member Ootori, and they pique his interest.

(Source: Anime News Network)