Charlie Kenton is a washed-up fighter who retired from the ring when robots took over the sport. After his robot is trashed, he reluctantly teams up with his estranged son to rebuild and train an unlikely contender.
Four beautiful rivals at an invitation-only martial-arts tournament join forces against a sinister threat. Princess Kasumi is an aristocratic warrior trained by martial-arts masters. Tina Armstrong is a wrestling superstar. Helena Douglas is an athlete with a tragic past. Christie Allen earns her keep as a thief and an assassin-for-hire.