Bret Maverick wins a saloon in a poker game and decides to end his roving ways and settle down in Sweetwater, Arizona. He takes on as a partner the former sheriff who comes with a shady background.
Tom Guthrie's plan to hide his wounded friend, Billy the Kid, from a vengeful U.S. Marshal at Bret's ranch threaten to spoil the ex-gambler's barn-raising.
Young Theodore Roosevelt comes to Sweetwater to find the President's horse, which is a gift to Geronimo as party of a treaty arrangement and has turned up missing.
When his partner Tom Guthrie is trying to get his sheriff's job back and hopes that Bret will keep quiet, Bret is busy with the biggest con of his life. Bret's brother Bart shows up.