In ancient Japan, a small kid named Kai is found in a ditch in the woods. As a man living in the kingdom of Ako, he enters a tournament when the original fighter is blinded. His chances for success fail when he is knocked down, and he is banished from Ako. Now, he teams up with 46 other banished ronin in order to not only save Ako, but also Kai's girlfriend, Mika, from a tyrant and his spy.