When Isa provokes the Nazis with a satirical song at her graduation party, she is denied her degree despite passing her exams. She has to give up her plan to become a teacher and, against her mother Petra's wishes, manages to perform in a political cabaret. She enjoys stage success as a singer with an accordion and falls in love with the pianist Laurenz. During the Second World War, Isa's family gets caught up in the wheels of political power and is torn apart - until, after much turbulence, the Vermehrens regain their old cohesion and accompany Isa together as she enters a convent in Bonn.