Kung fu master Chen is tricked and his hands crippled by the villainous gangster and brothel-keeper Tuen (Lo Lieh), who also forces his sister (Kara Hui) into prostitution. No longer able to practice the martial arts, he becomes a lowly street entertainer, performing with his beloved trained monkey Ah Mao. Monkey is a petty thief and meets Chen and the two begin an odd friendly relationship until Tuen's men slaughter Chens pet monkey, causing Little Monkey (Hsiao Hou) to try and take revenge for him. Monkey is trained by Master Chen and believes he is strong enough and leaves Master Chen.

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