Samantha Crawford is a con artist employed by George Cross. Cross once lost $50,000 to Bret Maverick and is determined to get it back. Two riverboat owners staked Maverick $5,000 which he promptly loses to Samantha. Samantha claims Cross is her father and needs the money to get out of jail. Maverick forms a partnership with Samantha and purchases gambling equipment in a scheme to put Joe Riggs, a crooked game room owner, out of business. Samantha and Cross doublecross Maverick by selling the equipment to Riggs.

After losing his money in a bank robbery, Bart invests in a get-rich-quick deal with a beautiful — but not-so-dumb — blonde.

Bret is gired by a weathly texan to save her brother Mark from a conniving woman named Melanie. Posing as a Texas Colonel, Bret realizes that he's up against a master crook. With Mark's help and brother Bart's arrival as a weathly Easterner, they set up a scheme to catch the girl and almost outsmart themselves with their own cleverness.

On their way to Denver, Beau and Bart Maverick pick up $6,500 in a poker game at Stop Gap. They decide to wire the money to Denver through the Hulett Telegraph Company. They discover the company is a fake and that the telegraph line leads to a cave two miles away where the crooks stash the customers' money and send phony messages in return. The cousins devise a scheme to recover the money and put the company out of business.

Bart has a lot of explaining to do: the bank has been robbed — and his saddlebags are bulging with stolen loot.

Bart's latest poker adventure has him playing for a full house: the lives of his fellow stagecoach passengers.