The dangerous violent criminal Willy Jensen flees from a prison in Hamburg and seeks shelter at his brother Heinz' apartment. Heinz, an honest taxi-driver, believes in his innocence and helps him - until Willy kills another man in a robbery. After an argument Willy takes his wife Vera, who now lives with Heinz, as hostage on his further flight from the police. Heinz feels responsible for his brother and trails him, which makes it look to the police as if he's helping his brother.

Old Karl Knesebeck has long been head waiter and rules his waiters with an iron fist at the hotel. When the business passes into the hands of the heirs after the owner's death, he's in a difficult position. The unscrupulous Alwin makes advances toward Niddy, the owner's daughter, whose well-being Knesebeck watches over like a father. Alwin demotes the old man to toilet attendant — a tragedy that Knesebeck tries to salvage, especially since Niddy is about to marry Alwin and another man would actually be better for her...