The Eiryukan High School Musical Club is celebrating its 100th anniversary, and the annual school festival performance is coming up. Although it is a traditional club with a glorious track record, the current number of members is only four. Led by Hibino Ren, the club members work hard every day in preparation for the performance, but they all have strong personalities and are not very cohesive... And suddenly, in their peaceful days, the club is on the verge of being disbanded! At that time, a transfer student from New York, Otowa Shoma, arrives. He invites Shoma, who seems to be interested in musicals, to join the club, but he quickly turns him down... This is a story of youth that hinges on the survival of the musical club and the success of its performances.