"While on vacation in Scotland, the Thea sisters find a secret map! It holds clues to the location of the first of the seven treasures that were discovered hundreds of years ago by a young explorer. On the last day of their trip, the map is stolen! Can the mouselets find it before the thieves get their paws on the treasure?"--Page [4] of cover.

"Original title: Alla ricerca dei tesori perduti"--Colophon. "Based on an original idea by Elisabetta Dami."