The husband, named Adam, is a struggling writer who has been slowly losing his grip on reality. He rents a secluded cabin in the woods for himself, his wife, and their two young children, hoping that the peaceful surroundings will inspire him to finally finish his first book. However, as soon as they arrive, strange things begin to happen.
Adam starts receiving visits from mysterious strangers who seem to know everything about his past. They taunt him with stories of his failures and remind him of his deepest fears and insecurities. Adam becomes increasingly paranoid, convinced that someone is watching him and his family, and he becomes obsessed with finding out who is behind the strange occurrences.
Meanwhile, his wife, Lyla, is acting increasingly strange herself. She becomes secretive and distant, refusing to discuss the strange events with Adam and insisting that everything is fine. As his mental state deteriorates further, Adam begins to suspect that Lyla is hiding something from him, and he becomes increasingly desperate to uncover the truth.
As the tension between Adam and Lyla reaches a breaking point, the couple's relationship is tested to its limits. With his sanity hanging in the balance, Adam is forced to confront his demons and face the truth about his past in order to save his family from the mysterious forces that seem determined to destroy them.