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.
In 1980s Hong Kong, troubled youth Chan Lok-kwun, a mainland refugee, struggles to survive in the Kowloon Walled City by joining underground fights. Betrayed by crime boss Mr. Big while trying to buy a fake ID, he steals drugs from him and seeks refuge in the Walled City, where he encounters Cyclone, a compassionate yet authoritative crime lord.
When a Hong Kong police negotiator is informed about the sudden disappearance of his 16-year-old daughter in Thailand, he travels there to search for her whereabouts.
