Evil aliens led by Lothor have attacked all the ninja academies as part of his diabolical plot to take over the earth. Now the surviving students from rival ninja academies must team up with the mysterious Green Samurai Ranger to save the world. Power Rangers Ninja Storm gives you the chance to play as your favorite Power Ranger in a variety of missions. Before throwing yourself into Megazord battles, be sure to complete ninja training to earn special printable certificates.