The dramatic story of US Marines in training, in combat, and in love, during World War II. The story centers on a major who guides the raw recruits from their training to combat.

Robert Talbot, an American millionaire, arrives early for his annual vacation at his luxurious Italian villa. His long-time girlfriend Lisa has given up waiting for him and has decided to marry another man. Meanwhile, his sneaky business associate Maurice secretly misappropriates the villa as a hotel while Talbot is away. The current guests of the "hotel" are a group of young American girls.