It is the winter of 1879, and Dodge City has lost its snap. Thirty-one-year-old Wyatt Earp, assistant city marshal, loads his wife and all they own into a wagon, and goes with two of his brothers and their women to Tombstone, Arizona, land of the silver mines. There Earp becomes deputy sheriff, meeting up with the likes of Doc Holliday, Clay Allison, and Bat Masterson and encountering the love of his life, showgirl Josie Marcus. While navigating the constantly shifting alliances of a largely lawless territory, Earp finds himself embroiled in a simmering feud with Johnny Behan, which ultimately erupts in a deadly gun battle on a dusty street.