The story is set in present day Tokyo. Much of the setting is based upon real areas, the more obvious ones being the Shibuya Crossing and Tokyo Tower. The main backdrop of the series where all the characters reside is Shimokitazawa, roughly 6 minutes west of Shibuya on the Keio Inokashira Line. The Bureau of Magic is in Tokyo, which employs Mage Labor for certain special requests by everyday people. However, the mages must only use their magic with special permission, and any unlicensed use results in a penalty. The story is very gentle and centers around the protagonist, a witch named Yume Kikuchi (菊池ユメ Kikuchi Yume), a 2nd-year senior high school student from Tono in Iwate prefecture. In order to train as a magic user, she travels to Tokyo during her summer break to apprentice under the charming Masami Oyamada (小山田雅美 Oyamada Masami). The story tells of Yume's trials and tribulations as she works toward her eventual graduation as a full-fledged magic user licensed by the Bureau of Magic. There is a strong undercurrent of romance which is not resolved.