The following synopsis reflects the 89-minute Italian version. Mary Forbes, an American housewife, has fallen in love with an Italian–American man named Giovanni Doria while visiting her sister in
Rome. She arrives at his apartment door but decides not to ring the door bell. Mary hitches a ride to the train station, where she schedules a journey from
Milan to
Paris and telephones her young nephew Paul to bring her luggage. Mary next writes a telegram to Giovanni, expressing her love and pleads for his forgiveness. Mary boards a train compartment but before the train leaves the station, Mary sees Giovanni: he had learned about Mary's departure from her sister after not hearing from her. Their conversation is interrupted by Paul, who has arrived with Mary's luggage. As the train moves away, Mary decides to stay with Giovanni. Inside the terminal, they talk inside a restaurant where Giovanni reminds Mary she had told him yesterday that she loved him. Mary however felt conflicted as she is married to her husband Howard and has a young daughter, Catherine. Regardless, Giovanni has accepted a teaching job at the
University of Pisa and wants to live with Mary and Catherine along the
Marina di Pisa. Giovanni invites Mary to his apartment, and as they leave the terminal, she sees Paul. Because of her unexpected reunion with her nephew, Mary expresses doubt about continuing their affair. Angered by Mary's indecision, Giovanni slaps her and leaves the station. Paul witnesses the assault. While Paul and Mary wait for the next train to Paris, an Italian woman sitting next to them goes into labor. Her husband and Mary help the woman to a first aid station, where she is treated by a doctor. Mary has Paul watch the woman's three children. Inside the first aid station, the woman recovers and her husband thanks Mary. Meanwhile, Giovanni returns to the station to search for Mary. Paul is suspicious of their relationshp, and Mary instructs him to return home, with a promise to invite him to visit her for
Christmas. As Paul leaves the station, Giovanni sees him and asks him where Mary is. Paul refuses to answer Giovanni, who then runs back to the train station. He locates Mary and runs across the tracks, narrowly avoiding being hit by an incoming train, to Mary's dismay. Mary and Giovanni climb into an empty train compartment where they embrace each other. Moments later, they are arrested by the police for public lovemaking and escorted to a nearby police station. As they wait for the police commissioner, Giovanni confronts an officer about their arrest as Mary will miss her train. An overhead announcer also calls for Mary to reclaim her luggage. When the commissioner arrives, he states their actions will require a trial but instead he drops the charges since Mary is a married woman with a child. Giovanni escorts Mary to the station where she reclaims her luggage. Before the train leaves, they bid their final farewells. As Mary's train leaves, Giovanni exits the terminal. ==Cast==