Tang Lung, played by Bruce Lee, is a skilled martial artist from Hong Kong who is called upon by his cousins in Rome to help them with their restaurant business. When he arrives, he quickly learns that his cousins and their property are being threatened by a local syndicate who wants to buy their land and turn it into a shopping mall.
After refusing to sell, Tang’s cousins are targeted by the syndicate’s hired goons, who harass and intimidate them until they agree to sell. However, Tang steps in to protect his family and their property, and in doing so he poses a new threat to the syndicate’s plans.
As the situation escalates, the syndicate boss hires the best martial artists from Japan and Europe to take down Tang. Despite their skills and experience, they are no match for Tang’s outstanding martial arts abilities, and he easily defeats them all.
In the movie's climax, Tang faces off against the syndicate boss in a one-on-one fight. Ultimately, Tang is able to defeat the boss and put an end to the syndicate’s plans, allowing his cousins to keep their restaurant and their land.