The American West

Jesse James targets the railroads and Custer is sent on a secret mission into Sioux territory. Meanwhile, Grant deals with growing unrest in the west and south.

Allan Pinkerton is hired to bring Jesse James to justice. Meanwhile, settlers flock onto Sioux land to mine gold as Grant desperately tries to keep peace.

Custer rides to a showdown with the Sioux at Little Big Horn. Elsewhere, Jesse James targets a bank in the northern territory, hoping to make a big statement.

Billy the Kid uses his talents with a gun to get what he wants; and Wyatt Earp fights for justice. Meanwhile, Sitting Bull and Crazy Horse make a big decision.

Billy the Kid seeks revenge for the death of his friend; and Wyatt Earp questions his future as a lawman. Meanwhile, Jesse James reemerges from years of hiding.

Billy the Kid and Pat Garrett's cat-and-mouse game comes to a head. Wyatt Earp moves to Tombstone. Sitting Bull returns to America.

In the series finale, Wyatt Earp abandons the law in search of justice; and Jesse James is confronted by the Ford brothers. Meanwhile, Sitting Bull is accused of inciting a rebellion.