The stage is set for conspiracy, mystery and evil in America. As the powerful ninja known as Ryu, you must protect the world from a mysterious force that is threatening to take over the planet. Use all your ninja skills running, jumping, flipping, and fighting to make your way through more than 10 grueling levels filled with various obstacles and enemies. Master your Dragon Sword and find other weapons along the way that will make you an unstoppable machine as you head for the final showdown with the evil menace behind this attack.