Danville, Texas, 1875: Crooked gamble Sundance is ordered to leave town after being caught cheating at poker. As he goes he is approached by an old man who asks him to deliver a railroad claim ticket to a man on a white horse in Alberdene; the man will pay him one hundred dollars. As he rides out of town, Sundance looks back to see a gang of riders head for the saloon and shoot it full of holes, probably killing everyone inside. The gang leader demands the claim ticket from the old man but he no longer has it….
At the crossroads, Sundance passes up Alberdene and heads for Wilmington. He enters the saloon to find the gang he just left behind. The gang leader tells the hapless gambler to meet the man on the white horse and lead him into a trap and offers in exchange an enchanted deck of cards which never lose and protects the owner from death and injury. Late that night a figure appears in his room, a grim older man who is the fellow he’s been told to meet….
The next day, the train is halted by a huge stone structure blocking the tracks. The gang assaults the train and the leader discovers the chest he’s been after, which a traitorous troll had tries to give to his enemy. The chest contains the Golden Apples of Idunn; eating one, the leader is transformed back into Loki. Sundance and the stranger meet the train which is filled with trolls. Wielding a hammer, the stranger transforms into an aged Thor astride a winged horse. Thor wrecks the train and takes on trolls while Sundance decides this would be the best time to leave. He has a change of heart however and returns to aid his friend. With a lucky shot he shoots a Golden Apple out of Loki’s hand and tosses it to Thor. With one bite, the Thunder God regains his youth and vitality and defeats the trolls. Loki escapes, Thor returns to Asgard, and Sundance throws away the magic deck of cards.