A beautiful heiress is an excellent poker player. Her comfortable life changes when her father and his fortune die during market crash of the 1800's.
After a roustabout sailor avoids being shanghaied in 1850s San Francisco, his audacity helps him rise to a position of power in the vice industry of the infamous Barbary Coast.
Duke Fergus falls for Ann 'Flaxen' Tarry in the Barbary Coast in turn-of-the-century San Francisco. He loses money to crooked gambler Boss Tito Morell, goes home, learns to gamble, and returns. After he makes a fortune, he opens his own place with Flaxen as the entertainer; but the 1906 quake destroys his place.
Sal comes to the Barbary Coast from New England to find out who murdered her brother. She gets a job signing in Dude's saloon, falls in love with Dude, then wonders if he might be involved in the murder.