In China, a boy reads a legend about a mysterious woman's power over a wealthy Mandarin prince. In New York, Betty Cardon, a social butterfly, disregards her husband Blair's order to stop gambling their money at bridge, and finds herself in debt to Geoffrey North, who, encouraged by her flirting, now wants sexual payment. Cherry Blossom, a Chinese girl who refuses to be sold by her father to the brutal Li Hsun, a wealthy Mandarin, hides in Betty's home after Betty's friend, Susan Pettigrew, a mission worker, introduces them.

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