Kotaro, a young boy, and his dog meet a nameless samurai who is haunted by memories of his past which have led him to avoid drawing his sword ever again. Among the Ming is a fearsome Western fighter named Luo-Lang, whose only desire is to find a worthy opponent. When both groups clash with a Sengoku-era feudal lord, a proud general, and monks torn between faith and survival, the reason behind the Ming's pursuit tests the bond between Kotaro and Nanashi.