Italian costume drama about convicted women in France being sent to the penal colony on Devil's Island where they must wade through alligator-infested waters and find gold. Life on the island is tough for these buxom, beautifully-swept coiffed maidens - virtually none who look like they had even the slightest knowledge of crimes worthy of such a punishment. Here, if the girls want to get a day of rest they must work the night with the guards and/or warden of the island, but some changes come when Guy Madison arrives as the new warden out to change the horrible lives led by these playmate-wannabes.

The plot follows a noblewoman who, convicted of treason for political reasons, is sentenced to life imprisonment on Devil’s Island, a notorious penal colony for women near French Guyana.

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.