The story follows Meg, a young woman trying to rebuild her life after a traumatic experience in her past as a paramedic. To leave her nightmares behind, she takes a night job at a city morgue, hoping that the calm of the environment will provide the stability she desperately needs. However, what seems to be a tranquil refuge quickly turns into a dark and terrifying setting.
One night, Meg receives the body of Hannah Grace, a young woman who died under mysterious circumstances during an exorcism. As she confronts the cold silence of the morgue, Meg begins to experience unsettling phenomena that seem to be linked to Hannah's body. Tormented by visions and voices that trap her in a spiral of paranoia, Meg realizes that something evil has become trapped inside the girl’s corpse. As the hours pass, the tension mounts and the situation grows increasingly dangerous.
Fleeing from her own ghosts, Meg must face the darkness emanating from Hannah before what remains of the possessed young woman escapes and spreads chaos. With time running out and the limits of her sanity about to break, Meg will fight not only to uncover the truth behind Hannah's death but also to protect her own life.