A baker's son, who dreams of becoming a riding master at Vienna's Spanish Court Riding School, is admitted as an apprentice and achieves his desire under the tutelage of both two-legged and four-legged masters.

A million dollars, or a clue? Police report a break-in at an elite hotel, and the suspects sound suspiciously like Amy and Dan. There's a car and speedboat chase and an angry mob! When there's a Clue on the line, anything can happen. "La carrera contrarreloj para encontrar las 39 pistas ha empezado, y los hermanos huérfanos Amy y Dan Cahill no pueden creer que estén a la cabeza de la búsqueda, que los lleva a Viena y Venecia. Pero, ¿lograrán...