Ilsa, now a vicious warden, runs a mental-hospital for young women.

A bunch of delinquent women are shipped to an island prison run by the sadistic warden Carla. Forced into situations of sexual perversion and violence and torture, the prisoners band together to try to overthrow Carla and escape the island.

Edna keeps her younger sister Millie drugged and chained to her bed. The drugs have made Millie a nymphomaniac who’s endless supply of men that Edna providers her cannot satisfy her and seeing her sister unsatisfied gets Edna off. But Edna’s main plan from all of this is to inherit her deceased parents’ fortune which is supposed to all go to Millie on her 21st birthday, so if she can prove Millie insane she will get the fortune. But when one of the men appears to satisfy Millie, Millie discovers the outside world and the two will try to stop Edna’s evil plans.

This comedy has everyone’s favorite 6 Swedish gals enjoying their stay in the alps. When the girls aren’t enjoying the pleasure of their own company they’re out having a good time with nearly everyone else in town.