In the land of magic, a new king is being crowned. However, a mishap during the ceremonial rite causes the royal crest to be accidentally attached to a normal human, Kazuomi. To protect the crest from any villains who may be after it, Mewt - the cute and brave sorcerer - is dispatched to the human world. There, Mewt must live disguised as a girl, and as "she" and Kazuomi live under one roof together, the two begin to find themselves attracted to each other...