Ye Feng, Chu Tiange, Gai Shiai, and Cookie of Nanhua High School make up the Open Band. After missing the championship of a music competition by a narrow margin, the four decide to enter the National High School Competition when the new semester begins. There they run into even stronger rivals, and a run of exciting musical showdowns follows. Along the way, as they chase their musical dreams, the bandmates grow as people and deepen their friendship. Music and slice-of-life moments share the stage as the band pushes toward the national title.