Synopsis: The three ninja brothers return to Grandpa Mori's home for a summer filled with martial arts adventure. This time the trio defends a Native American nation from a businessman who wants to dump toxic waste on their land. The kids duke it out with the businessman's thugs to save the world from evil... The three ninja brothers return to Grandpa Mori's home for a summer filled with martial arts adventure. This time the trio defends a Native American nation from a businessman who wants to dump toxic waste on their land. The kids duke it out with the businessman's thugs to save the world from evil again. [More]