Addae has spent her whole life on the Golden Isle, a private island off the coast of South Carolina that has been in her family for centuries. Island residents don’t really fraternize with mainlanders, and for good reason. Golden Isle was founded by the Kinfolk, descendants—including Addae and her Nana Ama, the island matriarch—of escaped enslaved Black people. But the Isle and the Kinfolk have secrets that must be protected from the outside world. Secrets of spirituality, mythology that are deeply rooted in their West African culture, beliefs, and traditions. The Kin are bound to protect the Golden Isle and, in turn, it protects them. When Addae’s best friend Naria goes missing and one of the Kin turns up drained of blood, Addae's way of life is threatened. It looks like the work of the Adze, West African supernatural beings that drink human blood in order to survive—also known as vampires. Believing Naira is alive, Addae travels to the mainland. But as Addae gets closer to finding Naria, she uncovers deep secrets about Nana Ama’s past, and about her own… secrets that could change how she feels about the Golden Isle and her lineage. Torn between two worlds, Addae will have to decide how far she is willing to go—and who she is willing to cross—to save her best friend, and even herself.