Barberella's ship has landed on Planet Ultimate Surrender. As Barberella continues her search for Dylan Ryan, she explores this new Planet and is startled by the not so friendly indigenous twin people of the land. Barberella is in a somewhat awkward situation as two sets of twins start fighting each other. But Barberella is knocked unconscious and the pervy twins tear each other clothes off and sexually assault each other. As Barberella comes to, she sees the Twins are taking part in forbidden acts of lust and realizes that Dylan Ryan must surely have paid a visit to their planet and shown them these crude acts. While interrogating the twins about Dylan Ryan, Barberella herself becomes a victim of the forbidden crime of lust. She is gang banged by the beautiful twins and carried off by masked amazon