Riley Shiner is obsessed with Escape from Shudder Mansion, a video game that is based on a really spooky house in his neighborhood. He's played it so much he knows it by heart, which is why he won't go anywhere near the actual place—it's just too dangerous. There are shadows that creep around inside. And then there's the level Riley can't ever beat. It features the worst creature of all! Riley is about to find out that you don't always play this game. Sometimes it plays you!