A group of friends set out on a quest to find a magic stone to turn their mouse friend back into a prince.

Keina's life support fails, transporting her soul to the VRMMORPG Leadale 200 years in the future as the overpowered high elf Cayna. Inhabiting a world she once created, she befriends the NPCs she designed as her own children.

During the Royal Ball, Cinderella and her mice fellows discover a secret that could shake their world: the real prince has turned into a mouse by the evil witch, and the "Prince" from the Royal Ball is in fact a fraud.