The story follows Kitty (Chingmy Yau), a beautiful and deadly young woman who becomes a trained assassin after avenging her father's death. She’s taken under the wing of Sister Cindy (Kelly Yao), a legendary female killer who turns her into a seductive weapon. Kitty is soon involved in a deadly rivalry with Sister Cindy’s former protégé, Princess, a psychotic killer with a taste for women. Things get complicated when Kitty falls in love with a traumatized cop, Tinam (Simon Yam), who is emotionally unstable and repulsed by violence.