Tang Long (Bruce Lee), who is obsessed with boxing, travels thousands of miles to Rome to help Chen Qinghua (Miao Kexiu), who is in deep trouble. A big boss (Jon T. Benn) has set his sights on the land of Qinghua Hotel and sends gangsters to harass him day and night to force him to surrender. Aaron knocks down four gangsters in one minute, then subdues the hotel staff, knocks out the gunman (Homan Tapsell) who is ambushing in the apartment, subdues the big boss and more than a dozen of his men, and rescues the kidnapped Qinghua. The big boss, who is still determined to steal, invites Colt (Chuck Norris), a karate master from the United States, and lures Aaron to the Colosseum...