The Big Boss (; originally titled as Fists of Fury in the United States) is a 1971 Hong Kong martial arts film directed by Lo Wei (who also wrote the film) and Wu Chi-hsiang. Bruce Lee stars in his first major film in a lead role, and his first Hong Kong film since 1960. The film co-stars Maria Yi, James Tien, Tony Liu, and Nora Miao. Originally written for Tien, the leading role was given to Lee instead when the film's original director, Ng Kar-seung, was replaced by Lo Wei. The film was a critical success and excelled at the box office. Lee's strong performance overshadowed Tien, already a star in Hong Kong, and made Bruce Lee famous in Asia and eventually the world.

Plot

Cheng Chao-an is a Chinese mainlander who moves to Pak Chong, Thailand to live with his extended family and to work in an ice factory. He meets his cousin Hsu Chien when Hsu stands up to local street thugs who beat his kid brother. Cheng refrains from getting involved despite being tempted to, because he had sworn to his mother never to participate in any fighting, and wears a jade amulet as a reminder of his pledge.