Sherbert is a young, curious magical creature from Lylasia, a realm torn by a Magical Beast War. When he accidentally sets off a portal, he lands in our world and brings a pack of Kuuka, his sworn enemies, along with him. Knowing nothing about human ways, he vows to become a hero here and teams up with Togawa Erika, a young girl he grants magical powers so she can help him fight the creatures crossing the rift. As they battle side by side, their bond makes both of them stronger. The result is a fantasy magical girl story built around an unlikely partnership.