Kick Boxer (also known in the West as Once Upon a Chinese Hero and Once Upon a Time in China 6: Kickboxer) is a 1993 Hong Kong martial arts film directed by Wu Ma, who also appears in a supporting role.

Lau Chat (Yuen Biao), a young talented martial artist, joins Po Chi Lam to study under master Wong Fei-hung, who is away traveling in Asia.

Chat and his friend So (Wu Ma), one of Wong's disciples, were traveling to Hong Kong to buy medicine, and meets a journalist, Siu-ling (Shirley Lui), who was being harassed by foreigners on a ship.

This next day, constable Panther (Yen Shi-kwan), Siu-ling's father, leads his troop to raid Po Chi Lam and find the opium and arrests Chat and So to the yamen.

Chat, who is disowned by his fellow Po Chi Lam disciples, sneaks into the Chinese Western Chamber of Commerce to clear his name but was caught and beaten.