Welcome to the Card Core Tournament! A new craze has overtaken the cultural center of the north, in the legendary labyrinth city where the Adventurer's Guild is headquartered. Wielding the power of special crystals, anyone can become a monster tamer collector and battle other card tamers on the field of battle. The game, still fresh and new, has inspired a new generation to explore the world and uncover new adventure in pursuit of new cards. Uncover the new and, somewhat, safe method of monster taming! This story takes place in the same universe as Slime Dungeon, Bio Dungeon, and Hungry Dungeon.