El secreto del profesor (Aventura total 1)

Ulysses and Lia are completely astonished. Through a blunder, their tutor has enrolled them in Total Adventure, an extracurricular activity whose teacher has a reputation for being rather eccentric. Things aren't looking good, but, as always, reality surpasses fiction, and everything changes when they discover that Professor Hache has hidden a spaceship in the classroom. The ship, called Serendip, is a technological marvel and has a pilot robot, Roxlo. Lia and Ulysses have no idea that they are on the verge of an adventure that will take them to Eternia, far, far away from Earth. A true Total Adventure.