After losing to the evil Master Kai and his men, Lee Wen (Dragon Lee) has one of his legs amputated. But with the help of a wise master, a young woman and a steel prosthetic appendage, Lee learns the 18 Kicking Styles technique and prepares to take Kai down. But before he can reach his enemy, Lee must stop a series of formidable opponents, including a fire-breathing man and a squad of invisible ninja women.