For centuries, the magic and human worlds have coexisted in peace, though physically separated by a magical gate. However, when powerful magic spheres are stolen and fall to the Earth below, the king of magic dispatches Boss, a fighter; Lime, a master transformer; and Poogie, a master morpher to retrieve them. With little time remaining, the trio must recover the spheres, which, upon contact with the human world, absorb the negative emotions of household objects and transform into BEMs, Bug Eyed Monsters!