Jackie Chan takes the starring role as A Lung (Ah Loong is his character in Young master (1980) ) in this full lenght feature of Martial Arts excitement. Story begins in Shanghai, which in under Japanese invasion. Brother and his sister escape to Taiwan to stay in a Kung Fu school which is ran their grandfather. Taiwan is under Japanese invasion as well, and the master of the Japanese Kung Fu school decides there is no room for any other Kung fu schools besides the Japanese. Undaunted, the brother and sister reestablish their grandfather's school, leading to a final confrontation with the Japanese Kung Fu master. Jackie is a young thief who don't wat to fet involved in fighting or learn Kung Fu. But then he realizes the Japanes has gone too far in, they don't think Chinese people as human beings at all. A Lung is recruited to Lier the fiancee of Chen Cen to help her defend the Ching Wu Martial Arts School which was under attack by the Japanese. A Lung was not prepared to tolerate the Japanese oppression and organised a rebellion which leads to the film's bloody and dramatic ending.