When registering in a Berlin hotel, the beautiful Lilian realizes that she apparently has a doppelganger: She is arrested as a wanted jewel thief. Lilian decides to find the woman who is preparing her next coup in Nice.
When a prostitute is murdered in a cheap Berlin boarding house, an investigating judge suspects that the killer is her boyfriend, unaware that his own son and daughter are also mixed up in the case.
An American millionaire, who had always bad luck with women, bets that he can live without them for five years. But after four and a half years traveling around on his yacht, he rescues a lady from drowning in the English Channel.
The young doctor Dr. Virginia Larsen fights in vain against malaria on an island in the Antilles. She finally receives support from Dr. Dos Passos. The doctor persuades the rebellious natives to get vaccinated. They even help to dispel the suspicion of murder weighing on Dos Passos.
Captain Harms still suffers from the bomb attack on his ship. He can not put up with sitting on land, but is afraid of take to the sea. Slowly he is becoming more and more frustrated and gradually falls into alcohol addiction.
