All Satan needs to enslave the souls of all mankind is the Sacred Sword which is kept by Master William and his son Falcon. The Thunder Ninja Kids battle Satan and his ghouls, and with the help of Falcon's new master Samson, they avenge Master William's murder, vanquish Satan and save mankind.

• IFD Films & Arts Company
• Mark Houghton
• Ridley Tsui Bo-wah