It's 1944, and while sheltering during an air raid, Roger strikes up a conversation with Verity, a Wren. When he asks if she dreams, he begins to recount the haunting vision that has followed him for most of his life: a recurring dream of a mysterious house, a silent family on the lawn and an unseen, unidentified terror lurking in the room in the tower.

But when he is invited to stay at a country estate eerily similar to the one in his dreams, and is assigned the very same room, he becomes increasingly disturbed as his nightmares begin to become reality. What is really waiting for him in the room in the tower?