Achim Maerz is 35 years old, works as a subway driver, has a happy relationship and has a good relationship with his colleagues. But the routine of his well-ordered life is deeply shaken when a young suicidal woman jumps in front of his subway and is run over. Since then, Achim can no longer forget the last look she gave him during her jump. He becomes depressed and develops a psychosis that shakes his whole life.