Anna Gastaldi, owner of an electromechanical industry, has a secret affair with her best friend Lisa's husband, Maurizio Mainardi; when she realizes she's pregnant, she tries to end the relationship, but Maurizio hinders her and, trying to stop her, dies in a car accident, though not before swearing that he will return. This promise seems to be fulfilled five years later when, during a wedding, she recognizes her lost lover in her friend Maddy's groom-to-be.