For Tooru Honda, a 16-year-old high school student, the world has turned upside down as a result of a family tragedy. She gathers her belongings and departs, moving into a tent! She regrettably pitches her tent on the enigmatic Souma clan's private property, and the owner quickly learns of her secret. Tooru will soon discover that the Souma clan has its own little-known secret. Members of the clan change into the Chinese zodiac animals when they are hugged by someone of the opposing sex.