Goosebumps

Matt hates his tiny bedroom. It's so small it's practically a closet! Still, Matt's mom refuses to let him sleep in the attic. After all, they might need to use it. Some day. Or year. Then Matt does it. Late one night. When everyone's paying no attention. He sneaks into the attic and falls asleep. Poor Matt. He should have listened to his mom. Because when Matt wakes up, his whole life has changed. For the worse. And every time he falls asleep, he wakes up in a new nightmare...