This time the book takes you to the next adventure trip of the Thea Sisters as they are headed for Spain. The girls planned a two week vacation post exams and are now ready to initiate it. However, these plans are about to change. A package reaches their door, which was sent from Joaquin Vega and Anita, two dancers they had met at a World dance Workshop. They were invited by Vega for spending their holidays with them in Seville. But soon things take a huge turn when a Precious fan goes missing and this turns their voyage into an investigation. Later we come to know that they aren’t the only ones looking for it. Who solves the case, the Sisters or the mouselets?