O'Day, the terror of Red Gulch, wins the entire stake of a gambler named Granger in a poker game but gives it all to Denver Nell, a dancehall girl, when she tells him her sad story. O'Day later discovers that she has returned the money to Granger, and he decides to reform. He goes to another town, where (now known as Good Deed O'Day) he meets an old friend, a wealthy rancher with whose sister, Mary, he is in love. Snowden takes a trip to Denver and returns with Nell, whom he has married.

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