Lao San, is a retired Marine veteran who lives in his world of innocence and optimism due to a brain injury. He assumes the role of a dedicated vigilante and fights people whom he considers bad.
A man looking for the release of a long-time prisoner takes a police officer, his daughter, and a group of strangers hostage.
Danny is a young martial arts enthusiast who arrives in Hong Kong to head a school of Choy Lee Fut owned by his wealthy father.
After accidentally killing his competition during a kung fu movie audition, Cheng Lindong is sentenced to seven years in prison, upon which he is released back into the world and the arms of his faithful girlfriend, Ke Lin. In a desperate move for a new life, he changes his identity and finds a job as a sparring partner at a boxing gym subsidized by its wealthy benefactor, Huang Li, who also happens to own a film studio.
A railroad worker in China in 1941 leads a team of freedom fighters against the Japanese in order to get food for the poor.