Tohru Honda thought her life was headed for misfortune when a family tragedy left her living in a tent. When her small home is discovered by the mysterious Soma clan, she suddenly finds herself living with Yuki, Kyo, and Shigure Soma. But she quickly learns their family has a bizarre secret of their own: when hugged by the opposite sex, they turn into the animals of the Zodiac!
Despite the loss of her beloved mother and a string of misfortunes, Tohru Honda is always smiling, even while living in a tent! But after learning that she's living on land belonging to the Soma family, she receives an invitation to live with Yuki, Kyo, and Shigure! Surrounded by Somas, Tohru discovers their family secret: When hugged by someone of the opposite gender, they turn into Zodiac animals!