In the series, it starts with Roaracryst's leaving his family to join the Crystal Monsters protection crew with Ninecoat, Mouselette, and Plantmore in order to save the Crystal World. While they are getting all the Crystal Balls from Devil J, they encounter foes among the way into saving the Crystal Monster race. On their battle against Hunter Grai, the Crystal Monsters became powerless to stop him and his newborn deadbeat Devil J. However, luckily, they have seek power from Iccryst, who was desperate for them. Using the powers that Iccryst have given them, Roaracryst, Ninecoat, Plantmore, and Mouselette saves the world.