Ann Parker and Bob Martin, reporters on the Daily CHronicle, go to Chinatown to get a story on the wedding that is supposed to bring an end to a long-standing feud between warring Chinese Tongs. The theft of a wedding-present necklace starts the feud anew. Ann and Bob are drawn into the dangerous situation but Tarzan, Famous Police Dog, is a vital factor in solving the mystery which results in a final victory over the real criminals and restoration and goodwill between the warring clans.