The battle of Sekigahara has just ended, as armies of rival samurai clash across Japan to be the next Shogun. All this seems far removed from Kami, a boy who quietly goes about his everyday life in his farm village until one day he trips over the unconsious body of a warrior hidden in the long grass. That discovery will lead him on an adventure across the warring kingdoms, facing assassins and enemy soldiers as he journeys to the capital to face the new Shogun. Through his travels he aspires to become a samurai, and in his many challenges he eventually comes to understand what it means to be one.