Ming Toy is on the auction block in China. She is saved by Billy and taken to San Francisco by Lo Sang Kee. To save her from deportation she is sold to Charlie Yong, the Chop Suey King. Billy kidnaps her with plans of marriage.
Joan Fry, a society woman, falls in love with Chuck Riley, the white-leader of a powerful gang in Chinatown, and he quickly drags her down into the depths with him. But seeing her so much in love with him causes him to realize he isl in love with her, and he determines to lift her up again. "Boston" Charley, the rival gang-leader, has other plans.
Bulldog Drummond is a British WWI veteran who longs for some excitement after he returns to the humdrum existence of civilian life. He gets what he's looking for when a girl requests his help in freeing her uncle from a nursing home. She believes the home is just a front and that her uncle is really being held captive while the culprits try to extort his fortune from him.