The year after training a young Wong Fei-hung (Jackie Chan) in ''Drunken Master'', Beggar So / Sam Seed returns to find that his wife has adopted a son Foggy. Sam takes a disliking to the boy and tortures him mentally and physically. Devastated, the boy runs away and takes a job at an inn, where he meets Rubber Legs and his student. He overhears that they are looking for Beggar Su and want to kill him, making Rubber Legs' Northern 'Drunk Mantis' Boxing supreme.