Jr High School boy Konta is orphaned when a fire destroys the family shop "Magic Lingerie" and his home on the second floor. Moving in with the family of friend, Mika, Konta's dearest keepsakes are the few pieces of lingerie that managed to survive the fire. Returning from school one day, Konta discovers a strange girl in his room, wearing some of the lingerie, but is even more surprised when her slip slips off and she turns back into her friend's baby brother. With the discovery that the lingerie really is magical, Konta realizes that he can use it to temporarily become someone else - a woman. From schoolgirl to idol star, Konta's miss-adventures are just beginning.