Tian is a singer-songwriter with a massive online following, known for her hypnotic vocals and ethereal looks. But behind the glamorous façade is a disturbing reality: raised in an isolated mansion, Tian is a prisoner in her own life.Liya is Tian’s childhood friend and her only close companion, tasked with protecting Tian at all costs. But hidden beneath Liya’s beautiful human exterior is a beastly secret: her teeth are far too sharp, and her appetite much too ferocious. When several fans die mysteriously while watching her livestream, Tian, along with Liya, are sent to a spiritual healing retreat on a remote island in the South China Seas. They are joined by Tian's musical collaborator Shenyu, a troubled idol seeking his own new start. But the trio soon discovers that the island is no peaceful getaway. There is constant surveillance, bizzare rituals, and something terrifying lurking in the forest. Something not quite human.In order to escape with her loved ones, Tian must uncover her connection to the island’s blood-drenched legend -- and the truth behind Liya’s monstrous identity -- before the island claims them all as its final sacrifice.