Justin knows that something is wrong with his best friend. Zee went missing for a year. And when he came back, he was…different. Nobody knows what happened to him. At Zee’s welcome-home party, Justin and the neighborhood crew play hide-and-seek. But it goes wrong. Very wrong. One by one, everyone who plays the game disappears, pulled into a world of nightmares come to life. Justin and his friends realize this horrible place is where Zee had been trapped. All they can do now is hide from the Seeker.