Plot

A lone drifter suffering from partial memory loss accepts a job to look after a psychologically troubled woman in an abandoned house on an isolated island.

A lone drifter, Isaac suffering from partial memory loss accepts a job from his old landlord Barrett, to look after his niece Olga, a psychologically troubled woman living in an abandoned house on an isolated island. When Barrett convinces Isaac to confine his movements to the house and leaves the two of them alone, a game of cat and mouse ensues with Isaac fighting to survive amid the terrifying resurgence of his own memory.—Justin Hyne - Producer

Amnesiac drifter Isaac is hired by his acquaintance and landlord Moe Barrett to look after his niece Olga, who will occasionally go catatonic with little to no warning, putting her at risk as she lives on a remote island. The job requires that Isaac be chained in a harness that restricts him to certain portions of the house. He learns from Moe that Olga's mother went missing after locking her husband in the basement. Olga's father went insane due to extreme claustrophobia and killed himself. At the house, Isaac finds that, when lucid, Olga roams around with a crossbow and an eerie toy rabbit with human-like glass eyes.

After experiencing supernatural phenomena, Isaac discovers Olga's mother's corpse hidden behind a wall in the basement using the rabbit doll as a dowsing rod, since it drums whenever anything hidden in the house is close by. Olga warns Isaac that Moe will not let him leave, revealing what Moe told her: Moe and her father were the ones who killed her mother, who enjoyed toying with her husband's claustrophobia. Moe also planned to kill his brother, but could not go through with it. He then hired Isaac, who lured Olga's father into the basement and locked him there. Isaac has Olga call Moe, who confirms the story.

Isaac frees himself from the harness by taking the key from Olga's mother's corpse. Olga shuts off the power then tries to kill Isaac, but goes catatonic. Taking advantage of her catatonic state in an opportunity to escape, he locks Olga in the harness but she manages to shoot his leg with the crossbow. Isaac regains his memory, which reveals that he was not responsible for her father's death, as he had second thoughts and had tried to warn him via a note that Moe discovered. Moe pushed Isaac off a balcony, but he survived with amnesia.

Isaac tries to escape through a crawl space and is stalked by Olga's mother. The passage leads to the part of the basement wall where he discovered her corpse, which he finds is still there. As he attempts to saw through the thin wall to get out, he notices that the corpse's head has slightly changed position. Moe arrives and sees Isaac through the hole on the basement wall. Olga shoots Moe with the crossbow, walks back upstairs, and locks the basement door. Suddenly, Moe hears Isaac through the intercom, announcing he is already out of the house by escaping through another crawl space. Olga's mother saws through the wall and stalks Moe in the dark.