When a murder occurs at Magic School, Paige and Agent Brody get sucked into an unfinished gangster novel during their investigation. However, their only hope for getting back into the real world is to find the author of the story and get the story finished. As the pair work on their adventure in the pages of the book, Piper, Leo, and Phoebe work on trying to finish the story themselves to bring Paige and Brody back to the present before they're killed by the story's criminal element.