Enter the dragon

Bruce Lee, John Saxon and Jim Kelly star in this martial arts action adventure. Martial artist and instructor Lee (Lee) is asked by British Intelligence to assist in their investigation of drug smuggler Han (Shih Kien) by attending a martial arts tournament on Han's private island and using the opportunity to gather evidence against him. Han is dangerous and unstable, threatening the martial artists with imprisonment and death, and events on the island culminate in a final violent battle.