The story of student love in the most difficult times, because even during the Protectorate, young people liked to have fun, dance, and fall in love. In the villa of their classmate Paddy, who was expelled from high school because of his mixed heritage, his former classmates gather, obsessed with jazz and the desire to start their own band. They succeed, and when Paddy's father takes Zuzana, whose parents are in a concentration camp, under his wing, the band also gains a singer. Zuzana and Paddy fall in love. Their classmates prepare a concert, but it is threatened by a ban imposed by the high school principal, who says that students are not allowed to perform in public after 7 p.m. Zuzana lures the principal to Prague with a fake invitation, where he is to be awarded the Protectorate Order for his pedagogical merits. The Maskovaní banditi concert takes place, but the price the students pay is high...