An ancient samurai warlord returns and raises a new demonic army to subdue the world. But instead of hiring unreliable minions he transforms innocent animals into fearsome warriors. A ninja master notices how every transformation destabilizes the balance of nature, causing storms and earthquakes, and decides to send out his best ninja disciples to restore the order. When none of them returns, he is left with his last choice: the young ninja Hiro and his blunt friend Futo. Players control the characters through different worlds using a third-person perspective with a relative amount of freedom to explore the environment. When lost, the characters can meditate to receive a hint and see an arrow that points into the general direction of the next objective.