Now that Diablo, leader of the Destructive Dinos, has been released from his fiery prison deep within the Urth, he seeks to turn the world into a raging inferno. Determined to pursue his vision for Urth as a dominion of evil, Diablo thrives on inflicting immense pain and agony on his enemies. Hisfollowers and foes alike believe that Diablo is evil incarnate. Annihilation of all other dino-beasts is essential for Diablo to continue his reign of terror and carry out his gruesome vision for Urth.