Set in 1865 in southwest Missouri, at the close of the Civil War the film follows the adventures of two Confederate men and a black man who they rescue from a lynching.

An Italian mechanic finds that he has inherited a billion-dollar company from his dead uncle, but he needs to be in San Francisco in 20 days to sign over the will. In the meantime, he is chased by kidnappers and the affected corporation's president.

Cole Thornton, a gunfighter for hire, joins forces with an old friend, Sheriff J.P. Harrah. Together with a fighter and a gambler, they help a rancher and his family fight a rival rancher that is trying to steal their water.