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Richard Jones is the assistant to the district attorney. He decides to single-handedly expose a drug ring that is terrorizing Madison, a reformer. Madison's son, Bob, has become a hophead because of the ring, and Greer, Jones' rival for the hand of Madison's daughter, Constance, is the ring's leader. The district attorney himself is in league with Greer as well. Jones disguises himself as an Asian, leaps over tenement roofs, beats up a mob of Chinese gangsters, and performs several dozen other daredevil feats.