Legends swirl around Monster Island, a haven for creatures rumored to dwell there since time immemorial. Despite the ominous moniker, the monsters populating the island are amiable beings, harboring a deep-seated fear of humans. Enter Kotake, a curious child who stumbles upon this mystical land. Surprisingly, a surly crimson ogre named Naki becomes the unexpected guardian of the young visitor. As their paths intertwine, what peculiar occurrences will arise from this unlikely companionship?