Nathan is always alone. Stuck with four siblings and bullies he can't shake off, being alone shouldn't be as easy as it is. But his sisters think he's a pest. (That doesn't bother Nathan—the feeling is mutual.) All Nathan wants to do is spend the summer with his big brother, Ben, but something always gets in the way. With only his vivid imagination as company, Nathan creates worlds and hideaways just for himself, with no siblings or bullies to bother him. But when he finds a real portal to another world, will Nathan finally find the happiness he always wanted? Or will his loneliness find him there too?