When Konata Izumi is walking home with her friends to a slumber party, Konata is struck by lightning. Unable to get 911, Konata survives by the aid of her friends throughout the night. But, she wakes up a boy. After renaming herself Konato, she attends school as a boy. But as her friends help her get used to being a boy, will she begin to have feelings for a Hiigari Kagami?