One evening, Ma tells Daughter a story about a tiger spirit who lived in a woman's body, named Hu Gu Po. She hungered to eat children, especially their toes. Soon afterwards, Daughter awakes with a tiger tail. And more mysterious events follow: Holes in the backyard spit up letters penned by her grandmother; a visiting aunt leaves red on everything she touches; another aunt arrives with eels in her belly. All the while, Daughter is falling for her neighbor, a girl named Ben with mysterious powers of her own. As the two young lovers translate the grandmother's letters, Daughter begins to understand that each woman in her family embodies an old Taiwanese myth—and that she will have to bring her family's secrets to light in order to change their destiny.