When Eric opens a mysterious box, he unknowingly releases one of the most powerful beings in the world. However, when the group realizes that they cannot harm their foe, they must rely on Dungeon Master’s magic in order to dispel the beast. Though Dungeon Master runs out of spells to cast and the group must race to the dungeon at the Heart of Dawn in order to rejuvenate their abilities before Venger gains complete control of the beast.