A hedonistic bachelor - he is his rich family's black sheep - falls for a suicidal mental patient.

The ambitious punk rocker Max and the eco-activist Inge cannot stand each other, ever since Max publicly exposed her by singing the offensive song "When Inge is Dancing" in front of the whole school. But for Max and his classmates Fabio, Joscha and Lukas this song in particular has become a real hit at school as well as in the regional music scene: Their band called Systemfehler is on the verge of a breakthrough. But just before the important gig, which could get them a record deal, guitarist Josha is injured and can't play. Inge happens to be an excellent guitarist, and the only person who can fill in at such short notice. But when Max asks for her help, she imposes one non-negotiable condition: If she decides to play with the band, they will not perform the song "Wenn Inge tanzt".