The Ruby of Flames (Paperback) (ISBN-13: 9781646506736)

Aidan, Aria, Bianca and Dion are four normal kids who have finally been let out for their summer vacation and are ready for some holiday summer fun! However, all this changes when they discover a mysterious clue leading them on a hunt for a precious stone containing magical powers, in the beautiful islands of Hawaii. Read as they follow the clues and explore famous sites, while facing an unknown rival.