This psychological thriller delves into the fragile reality of Lauren Tranter, a new mother to twins, who is convinced that her babies are in danger from a supernatural entity intent on stealing them and replacing them with changelings. After a harrowing encounter in the hospital, Lauren's fears are dismissed as the product of exhaustion and mental strain. However, when her twins disappear and are then found seemingly unharmed, Lauren's conviction only deepens, leading her into a desperate struggle to protect her children and prove her sanity. Set against a backdrop of folklore and modern-day anxieties about motherhood, the narrative weaves a chilling tale of paranoia, love, and the lengths to which a mother will go to protect her children.