Cassie and Debbie are sexy coeds whose Spring Break trip to the notorious pleasure island of San Martia turns into a nightmare of abuse and exploitation. While visiting an underground nightclub, a brutal Russian forces shy, dark-haired Cassie to submit to him on the dance floor, while flirtatious blonde Debbie is molested, chloroformed and whisked away in a black limousine to a secluded mansion. For Deborah it is the beginning of her training as a sex slave by a secret society. A man known as The Trainer cunningly converts her natural lusts, reducing her overnight to the level of an obedient, horny animal.

Cassie, meanwhile, turns for help to the sadistic island police, who demand step by step payments for their services, taken in healthy doses out of her pretty hide. Finally, Cassie is arrested and spirited away by a judge who seeks to turn her into a living doll to be disciplined, abused and taunted on a daily basis. Debbie is put up for auction, falling victim to a man she rebuffed earlier on the trip. Will the girls free themselves and each other or will they be condemned forever to be coeds in captivity?