Joseon (Korea), 1758. There are few options available to illegitimate daughters in the capital city, but through hard work and study, 18-year-old Hyeon has earned a position as a palace nurse. All she wants is to keep her head down, do a good job, and perhaps finally win her estranged father's approval. But Hyeon is suddenly thrust into the dark and dangerous world of court politics when someone murders four women in a single night, and the prime suspect is Hyeon's closest friend and mentor. Determined to prove her teacher's innocence, Hyeon launches her own secret investigation.
1426, Joseon (Korea). Hwani's family has never been the same since she and her younger sister went missing and were later found unconscious in the forest near a gruesome crime scene. Years later, Detective Min - Hwani's father - learns that 13 girls have recently disappeared from the same forest that nearly stole his daughters. He travels to their hometown on the island of Jeju to investigate...only to vanish as well.
1800, Joseon (Korea). Homesick and orphaned 16-year-old Seol is living out the ancient curse: "May you live in interesting times." Indentured to the police bureau, she's been tasked with assisting a well-respected young inspector with the investigation into the politically charged murder of a noblewoman.