Sarah O’Neill is a young, single mother. Moving with her son Chris to a rural house, Sarah hopes for a fresh start, leaving behind their troubled past. But things don't go as he imagined. One day when they go for a walk in the woods behind their house, Chris suddenly disappears. Desperately searching for her son in the forest, Sarah discovers a huge hole. When Sarah finally finds her son, he thinks that everything is working out. However, after a while, the young child begins to exhibit strange behaviors that no one can make sense of. Sarah, who is worried about her son after the events, starts to keep her son under custody. Meanwhile, a mysterious neighbor emerges and makes Sarah uneasy. Soon the young woman will have to face a terrible reality.