Teenager Phillip Fillmore (Eric Brown) is out of school for the summer, his millionaire father is out of town on business, and he's got the mansion to himself, with the sexy Dutch maid Nicole (Sylvia Kristel) to keep him company. It sounds like a dream summer, until Nicole starts acting strangely familiar toward Phillip, who isn't quite sure how to react. Meanwhile, chauffeur Lester (Howard Hesseman) seems to have something up his sleeve as well, which doesn't bode well for poor Phillip.