This is the world that lies, invisible, unknown, next to ours... A world ruled by the great Houses of Fire, Stone, Sky and Water... A world where the ancient gods are still alive, disputes between the Dukes of the Houses are still resolved in duels - and The deadly art of the blade master, the warrior-duelist, is still valued above all else... This is a world in which the War of the Gods is brewing. For from our world came into the unknown world people, one of whom was the Warrior Promised by ancient prophecy. A warrior whose sword can change the fate of the world forever. But... why is Odin, the Father of the fallen, roaming the roads again? Why does He strive to warn the Sons of Tyr who started the battle - and to help the fighters who came from our world, not to start a war, but to stop it?..