Norah and her best friend, Darcy, have started to build up a reputation as detectives! So Norah is more than happy to help when her crush, Zane Munro, asks her to take on his case. Money from the school store has disappeared right after Zane's shift. Everyone, including the principal, thinks Zane is responsible. But Norah knows he's not, and she'll stop at nothing to prove his innocence.