Colonel Franklin, a genetically enhanced solider, accepts a dangerous mission offered by his former enemies to investigate the loss of communications with a commercial mining station orbiting Saturn. He is captured by a powerful alien who specializes in genetically altered slaves. Against his will, Franklin is enhanced into a fighting freak and paired with the beautiful and deadly Cheval. As an inseparable team, they face arena combat for the amusement of gamblers on the outlaw planet Vandalus.