Charlie Reade looks like a regular high school kid, great at baseball and football, a decent student. But he carries a heavy load. His mom was killed in a hit-and-run accident when he was ten, and grief drove his dad to drink. Charlie learned how to take care of himself - and his dad. Then, when Charlie is seventeen, he meets Howard Bowditch, a recluse with a big dog in a big house at the top of a big hill. In the backyard is a locked shed from which strange sounds emerge, as if some creature is trying to escape. When Mr. Bowditch dies, he leaves Charlie the house, a massive amount of gold, a cassette tape telling a story that is impossible to believe, and a responsibility far too massive for a boy to shoulder. Because within the shed is a portal to another world - one whose denizens are in peril and whose monstrous leaders may destroy their own world, and ours.