At first, Maya and Leo thought that the notes found in lockers were merely pranks, until they found out that the notes contained secrets which might destroy the relationships and good reputation of many. Maya and Leo become partners in solving this case and together with their friends, they explore every nook and cranny in their high school – classrooms, library, storage rooms and hallways.
With every clue that they have, they get nearer to finding out who the culprit is, although the mystery seems to deepen.