Marooned on a desert island, Dr. Robert Farlow and wealthy toxicologist Count Ito Onato both fall in love with Lora, a beautiful Japanese-American girl. Lora prefers Robert but decides to reject him because of his excessive fondness for drinking. After their rescue, Lora marries Count Ito, but Robert, still in love and resolving to win her, stops drinking, and soon attains a reputation in medicine matched only by the count's.

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