A rocketship from an exploding planet Krypton lands not in Smallville, but rather war torn 14th century feudal Japan. When the baby from Krypton grows into a man, Hoshi, he is convinced by a ragtag band of warriors - Elseworlds versions of the Flash, Hawkman, and Batgirl, among others - to join a rebellion against the oppressive and cunning Shogun of Steel.