horror que los eternianos han contraido un virus que los está debilitando. Con la ayuda de Roxlo y el profesor Hache, Ulises y Lía se proponen encontrar una solución. Pero no será nada fácil... ENGLISH DESCRIPTION Ulises and Lía sign up for Total Adventure, an extracurricular activity offered by the school which, as its name promises, takes them on a total adventure! In Ulises and Lía's school, students can choose between various extracurriculars. Against their will, both end up in Total Adventure class with Professor Hache, a strange, gruff old man. What Ulises and Lía don't know is that the professor is hiding a secret and they are about to embark on a thrilling adventure. Ulises and Lía realize that they must return to Eternia to help its inhabitants. When they arrive, to their horror they discover that the Eternians have contracted a virus that is weakening them. With the help of Roxlo and Professor Hache, Ulises and Lía set out to find the solution. But it won't be easy…