starchRobert L. Talbot (Rock Hudson), an American millionaire, arrives early for his annual vacation at his luxurious Italian villa. His long-time girlfriend Lisa (Gina Lollobrigida) has given up waiting for him to "pop the question," and has decided to marry another man.
Talbot's sneaky major domo Maurice (Walter Slezak) secretly misappropriates the villa as a hotel while Talbot is away. The current guests of the "hotel" are a group of young American girls, including Sandy (Sandra Dee), trying to fend off a gang of oversexed boys, led by Tony (Bobby Darin).
Lisa ends up running back to Robert through the train station in her wedding dress. She borrows a bambino to get past the gate guard by claiming Robert's the father. We last see them arriving back at Robert's villa, which Maurice has once more turned into a hotel, this time with very different guests.