Lau Kar-leung spins this high-flying kung-fu saga about a Peking opera actor named Chen (played by the director), who, along with his beautiful sister (Kara Hui Ying-hung), is invited to dine with the dastardly and powerful Mr. Tuan (Lo Lieh). There Chen is slipped a mickey and when he comes to is accused of trying to rape Tuan's wife. Tuan offers to spare Chen's life if his sister becomes his concubine. The dealt is struck and Chen is cast into the street after getting his hands smashed by Tuan's henchmen. Years later, we find Chen struggling as a street performer with a trained monkey named Ah Mo. When Chen runs afoul of some gangsters, they kill his monkey. Just before Chen decides to snuff his own candle, he realizes that energetic street urchin known as monkey (Hsiao Ho) would make a decent substitute for his former simian partner. After the two again run afoul of the same gangsters, Chen vows to teach monkey kung-fu and soon thwarts the thugs. Later, he along with monkey decides to take on Tuan and break his sibling out of sexual bondage.
by Jonathan Crow synopsis