Siddy and Zadie are two normal 11-year-olds, obsessed with solving mysteries like their favourite detective podcast. until they discover they are anything but normal.
Instead of starting at their normal new school, they've been enrolled in the parallel School for Fireflies. Amidst the excitement of learning they are here to develop their magical skills. they discover a decades old mystery waiting to be solved. The girls set out to use all their detective knowledge, and soon find that the clues just might lead them to the reason Siddy's dad disappeared years ago.
