Life constantly seems to be wavering between really good and really bad for Owen, a lonely sixteen-year-old still reeling from the unexpected death of his mother and a fresh move to Toronto. After ducking into an old bookstore to escape high school bullies, Owen discovers that he can travel to a parallel, twisted version of the city with a magical tablet called a Battledoor, where he encounters new allies, bizarre creatures, and the ultimate antagonist who will stop at nothin