Daria [Elizabeth Kaitan] and Tisa [Cindy Beal], two nubile female prisoners wearing rough-cut rabbit skin bikinis, break out of their cell in a space gulag, overpower their guards, and escape in a shuttlecraft. The ship malfunctions and the girls crash land on a nearby habitable world where they become guests of Zed [Don Scribner], a scarred man who lives in a fortress guarded by two robots. Given new clothes, the girls are invited to join Zed for dinner at his table. At dinner, the two girls meet two other survivors from another crash, Rik [Carl Horner] and his sister Shala [Brinke Stevens]. They warn the girls that something is not right about Zed and that other survivors of their crash have disappeared.
A late-night visit to Zed's secret trophy room reveals all: the walls are lined with the heads of dozens of Zed's previous guests whom he hunted for sport.
Realizing they are next, Rik and Daria sneak out into the jungle several hours before dawn to set traps and survey the area. In the meantime, Zed takes Shala prisoner and forces himself on her to goad Rik into participating in the hunt. Zed sends an android to ensure the guests are in bed where they're supposed to be, but Rik and Daria are still out. Tisa intercepts the android on its way to check the rooms and distracts it by going skinny dipping. Eventually, Zed goes up to check the rooms himself. As Rik and Daria are coming in the window, they hear Zed approaching, strip, and jump into bed, pretending to have been having sex. Once Zed leaves, the pretend sex becomes real lovemaking, and the two lie in bed talking about having found purpose and contentment.
The next morning, Rik is forced into the hunt and becomes Zed's trophy. Daria and Tisa attempt to escape and are captured. They are chained to a column with Shala and told the rules of the hunt. The trio is then turned loose by Zed, to be hunted as game; he warns them to stay away from the "Phantom Zone".
Shala sacrifices herself to save Tisa from Zed. Using a map, the remaining two find their way to the Phantom Zone, an ancient temple inhabited by zombie-like creatures. They find a cache of laser weapons, and return to the jungle to fight Zed, pursued by one of the creatures. Zed knocks Daria off of a bridge over a chasm to her apparent death; unbeknownst to him, she saves herself by grabbing hold of a vine. He returns with Tisa to his fortress where he attempts to rape her. Daria interrupts and fights him; the monster that was pursuing her shows up, mortally wounds Zed, and attacks the women. They manage to kill the creature and find a spaceship to escape the planet. Zed, dying from his injuries, initiates a self-destruct of his fortress but Daria and Tisa escape in time, and decide to explore the universe.
