A family man travelling for work, Paolo Bianchi, meets on a train a lonely girl, Maria. He sees her again on a bus and she reveals him that she's in troubles: she's pregnant, her baby's father has left her and she doesn't know how to tell to her parents that she's not married. She asks Paolo to play the role of her husband and he accepts....
A German scientist murders his fiancée during World War II when he learns that she has been selling the results of his secret research to the enemy.
Andrea, the beautiful daughter of a railway gateman, is seduced by a rich passenger, who missed his train. Left pregnant, Andrea marries another man and moves to Prague, only to encounter her former lover and recover her former lust.
