AD 1600. The final battle to control Japan's future is being waged. Shimazu Toyohisa sets his sights on the opposing general's head in an all-out assault on enemy forces. On the edge of death, a door to another world opens and swallows Shimazu. He awakens in a place that is not here, in a time that is not now, where the strongest samurai from the period of warring provinces in Japan are brought to a new world of war where elves, dragons, goblins, and other warrior "Drifters" snatched from Earth's history are used as chess pieces in a endless game of blood, destruction, and madness.