Riverboat owner Tate Browder is one of the slimiest varmints to cruise down the Mississippi. On his boat, the New Moon, he's fleeced many a sucker in poker games that have made his fortune. But Chance Sharpe is on to Browder and his cheating ways ... and soon he's won the New Moon with a trick of his own that leaves Browder boiling for revenge ...and Chance fighting to stay afloat. Along the way he meets up with Marilee, a luscious blonde who wants to down Chance ... any way she can get him!