When three families are viciously massacred in the forest of the Pacific Northwest, and three young girls disappear, Dr. Ken Turner and his colleagues suspect the hybrid creatures they discovered in the jungles of Africa who were kidnapped by shady government agents. They find themselves back in pursuit of the half-human, half-chimpanzee creatures, and their missing colleague Dr. Melon. Their quest begins, at risk to their careers and reputations, in the little town of Willow Creek and the surrounding Trinity Forest where the mythical bigfoot is said to roam. Who or what will they find?