The young speech therapist Mark (Jan Sosniok) has huge inferiority complexes and a very small penis. He has fears that he can not make Nicole, his girlfriend happy. When he catches her in an affair, he feels confirmed. He swears by love and sex and now wants to concentrate only on the career. But then he gets to know gorgeous carpenter Lara (Doreen Jacobi). Both fall in love and the first night of love arrives. But he does not really want to, so he gets entangled in more and more stories of lies to hide his little secret on.