Fearing foster homes & adoption, four recently orphaned siblings decide to keep their mother's death a secret, burying her in a cement locker in the basement. The Lolita-like Julie quickly adapts to the role of surrogate mother, while Jack is only concerned with his developing sexuality & his increasing infatuation with his sister. When the intrusive curiousity of Julie's boyfriend threatens to expose their secret, Jack finally assumes the mature role of family protector. As he slowly wins Julie's respect, their gentle flirtation results in a devastating & forbidden consummation.