Three siblings have their plans for the summer ruined as they move across country as soon as school is out. The new house has been mostly vacant for the previous two decades, when the previous owners mysteriously vanished. The kids in the neighborhood believe the house is haunted, and even the adults can't deny that strange things happen around the creepy, old house on the corner. The Howards think these are no more than stories springing from overactive imaginations. That is until they discover a cache of ancient weapons. And what does the crazy old man across the street with his dire warnings have to do with it? Tom, Sam, and Ruth are convinced that things are anything but normal. All children dream the improbable; some dream the impossible. What happens when three children stumble into the impossible? Will it bring them together, or will it tear them apart?