You live in a world where far away, somewhere in the woods of Japan, you are the King/Queen of a castle where all The Mimic monsters from Roblox live and you can give them orders, treat them well or make them work at the castle. But the 4 Beasts, especially Kintoru and Enzukai, want to get revenge because you have the monsters for you and you "stole" them from the 4 Beasts (you actually saved them since even if they are monsters, they are much happier in the castle), so be prepared for war.