Ruri Aoki is an ordinary high school girl until she wakes up one morning with horns on her head. Her mother takes it in stride and explains that Ruri is half-dragon, since her father really is a dragon. Unsure what to think, Ruri heads to school anyway, but her best friend, classmates and homeroom teacher quickly spot the change. Soon everyone wants to see, touch and photograph her horns, and her dragon side even raises the temperature during a lesson. The result is a supernatural slice-of-life comedy about a very unusual girl trying to get through a normal school day.