Year 865th. The British Isles are ruled by warring kings, and the kings are ruled by the Church, ruthlessly cracking down on anyone who disputes its authority. Only formidable Vikings do not fear Christian hierarchs and hold fast to their faith. The young blacksmith Chef, born a noble English captive from the leader of the robbers-northerners, becomes the enemy of his own people by the will of fate - or perhaps by the will of pagan gods. A mysterious mentor who is in visions helps him create previously unseen weapons. But this is not enough to win victory after victory; Chief's main allies are his courage and ingenuity. The chief collects bit by bit his own kingdom and begins an all-out war - the Hammer and Cross war.