Niya Moto is the only one-legged Samurai kid in Japan, famous for falling flat on his face in the dirt. None of the samurai schools will teach Niya, until a letter of offer arrives from the legendary samurai warrior Ki-Yaga, sensei of the Cockroach Ryu. Niya joins the four other students of the Cockroach Ryu, all with barriers of some sort, and as they learn traditional samurai skills they become firm friends. But their skills will be tested as they make the treacherous journey to the annual Samurai Games and face their mighty opponents, the Dragon Ryu. Will they be able to overcome their gravest fears in time?