Bethany is a loving single mother situated with her two children, settling in to a new area, but we notice immediately that they are being watched by a strange man, Henry, who narrates his perspective from a distance. As the pursuit becomes more intense, Bethany begins to notice Henry more, and he becomes more intrusive into her personal life, with tension building throughout regarding Bethany's safety.

In a quiet British seaside town, Santana, a troubled young woman desperate to escape her suffocating family, runs away with her volatile boyfriend Frank. The pair marry in a rundown coastal venue, hoping for a fresh start — but their new life is shattered when a mysterious car rams into them on a rural night road, killing Santana instantly and leaving Frank consumed by grief and obsession. Refusing to accept her death, Frank traps his former medical professor, Dr. Pret — a man secretly infatuated with Santana — and forces him to help reanimate her using a stolen voodoo ritual. As Frank’s desperation deepens, he manipulates and blackmails Pret into harvesting “perfect” body parts from Santana’s own family, driving both men further into depravity.