Jack Fletcher is shipwrecked off the coast of Japan - his beloved father and crew lie slaughtered by Ninja pirates. Rescued by the legendary sword master Masamoto Takeshi, Jack's only hope is to become a samurai warrior to face his deadliest rival, Dragon Eye. He is on the run with no Sensai to protect him, and when he is captured by Ninjas, he discovers his fate is bound by the Five Rings - Earth, Water, Fire, Wind and Sky. Ambushed by Shogun's samurai, Jack and his friend's only hope to escape is the Seto Sea. With ferocious storms, man-eating sharks and ninja pirates, their chosen route is fraught with danger and unless they can harness the Ring of Wind, they are destined for a watery grave.