Claire used to have a hard time at school, but now misfortunes simply haunt her: first, a nasty note was planted in her locker, and then an expensive piece of jewelry was stolen. Someone else would have sighed and thrown up their hands, but not Claire’s classmates, the inseparable trinity of Young Detectives, who have unraveled more than one mysterious crime. Suspecting that the theft and the note are links in the same chain, the friends begin a new investigation - and here - the bright red paint confuses all the cards for the guys...