
Lucas McCain raises a son while battling desperados in New Mexico.

Lucas is out for vengeance when Mark is used as a pawn in a bank robbery scheme.

Mark's finding of the body of a murder victim starts Lucas, his friend Artemus and Marshal Torrance on a search for the killer.

Lucas shoots a horse thief who turns out to be a member of the Boyle clan and now Ma Boyle is after him.

A band of Indians kidnaps Mark and disappears into the hills.