After his brother was crippled in the ring by a cheating Thai boxer, Chan Hung goes to Thailand to avenge his brother, and finds the key to an omen which may release their family from an ancient curse. He is then caught up in a spiraling web of fate, Buddhist curses, and black magic.
The Boxer's Omen is a 1983 Hong Kong horror film directed by Kuei Chih-Hung and produced by Shaw Brothers Studio. It is sometimes described as a sequel to Bewitched (蠱) (1981), also directed by Chih-Hung.