Twin Hills is a dying forest in an abandoned Texas oil field, now skirted by a residential neighborhood. Its protector is an ancient oak tree called Daronwy, who has turned the forest's pain into a dark magic that it hopes can keep the remaining trees safe from further harm. The spell was working, too—until a young boy from the nearby neighborhood, Jeremy Trahan, is drawn to the woods in search of the magic he senses instinctively. By finding the magic, Jeremy hopes it will help him escape the boredom and bullies that plague his life—just like in all the books he's read. But as he gets closer to discovering the gateway to the other world that the spell hides, land developers descend on the fragile forest with bulldozers and chainsaws. Will Jeremy seize the chance to leave his mundane world behind, or will he stand and fight for his haven?