A tale rife with villainy and heroism, the story centers on a crooked local police captain taking money from foreign agencies. When Rover, the pet of a politician's wife, is dognapped, the captain must find a scapegoat on whom to lay the blame. He settles on an umbrella salesman named Mr. Chan, and offers him loads of riches to take the fall. Chan's daughter, dubious about the deal, enlists the aid of her boyfriend (Kao), who discovers endless levels of corruption. Inevitably, there is an ultimate kung fu showdown.