In 1866, Kansas, the American civil war has just finished and the armies disbanded. The building of the West begins, and in 1872, the new city of Dodge City is ruled by violence and shootings. The Irishman Wade Hatton (Errol Flynn) is a man adapted to these days and presently is conducting a group of pioneers, including Abbie Irving (Olivia de Havilland) and her reckless brother, to Dodge City. Once in the city, Wade is invited to be the local sheriff, and an incident makes him accept the position. He tries to clean up the cattle town, ruled by the powerful outlaw Jeff Surrett (Bruce Cabot) and his gang, with the support of the decent local people.

Professional daredevil and white-suited hero, The Great Leslie, convinces turn-of-the-century auto makers that a race from New York to Paris (westward across America, the Bering Straight and Russia) will help to promote automobile sales. Leslie’s arch-rival, the mustached and black-attired Professor Fate vows to beat Leslie to the finish line in a car of Fate’s own invention. The Blake Edwards style of slapstick and song originated with this movie. A dedication to Laurel and Hardy appears at the beginning of the film. Edwards’ tribute to Stan and Ollie can be seen most clearly in the interaction between Professor Fate and his cohort Max, as well as in the operatic Pottsdorf pie fight.