A new teacher, Dr. Dr. Bach, is transferred from his quiet village elementary school to the Mommsen Gymnasium, bringing along his nephew Jan. Bach's lackadaisical methods raise the suspicions of the other teachers.
Aspiring singer Susanne takes over for ham actor Viktor at a small cabaret in Berlin where he works a woman impersonator and per chance she's discovered by an agent, who thinks, that she really is a man. She becomes famous, but her situation becomes troublesome, when she falls in love with Robert.
