An elderly couple, Audrey and Henry Walsh, are devastated by the loss of their only grandson, Jackson. Driven by grief and desperation, they turn to dark rituals in a desperate attempt to bring him back. Utilizing their knowledge of ancient occult practices, they kidnap a pregnant woman named Shannon, intending to perform a reverse exorcism that will put Jackson's soul into her unborn child. Audrey and Henry orchestrate the elaborate ritual with chilling precision from within their suburban home, creating an atmosphere of escalating tension and supernatural dread.

As the ritual unfolds, increasingly disturbing and malevolent forces are unleashed, complicating their plans and endangering everyone involved. Supernatural occurrences begin to haunt both the couple and their captive, each encounter growing more terrifying and erratic than the last. As the lines between the living and the dead blur, Audrey and Henry are confronted with horrifying consequences beyond their control, challenging their resolve and questioning the very morality of their actions. The unrelenting sequence of events culminates in a gripping climax that leaves a lasting impact on all their lives.