The series tells the story of the five students; Yuuta Hoshitani, Tooru Nayuki, Kaito Tsukigami, Kakeru Tengenji, and Shuu Kuga as they struggle to enter the musical department of Ayanagi Academy, a school focusing on music. They need to be accepted to the Star Frame Class, which is directly taught by the members of Kaou-kai, the most talented from the musical department who stand at the top of the pecking order within the academy. Luckily, they are spotted by Itsuki Ootori, one of Kaou-kai members.