Kanon Shibuya, a gifted musician, misses her chance to enter the music program at Yuigaoka Girls' High School due to her stage fright, leading her to join the general curriculum. When Kanon decides to give up on music, her classmate Tang Keke sparks her passion by introducing her to the world of school idols. Despite facing opposition from Ren Hazuki, the school director's daughter, Kanon and Keke strive to establish a school idol group. Their path to success involves a challenge set by the director—to win the Yoyogi School Idol Festival. As they navigate obstacles, the girls gain new allies and members, transforming into radiant idols with unwavering determination.