Batalla de robots (Aventura total 5)

For millions of years, Eternia was a free planet. But Councilor Fiotto usurped power, banished the king, and turned Queen Runa into a tyrant who enslaved the Eternians. Millions of kilometers from Eternia, Lia and Ulysses signed up for Total Adventure, an elective course taught by Professor Hache, because they had no other choice. What Ulysses and Lia don't know is that their destiny is to help the Eternians, nor that, aboard the spaceship Serendip, piloted by the robot Roxlo, they will travel to Eternia to experience a great adventure. A true Total Adventure. In this fifth book, Ulysses and Lia return to their favorite elective class. In this volume, Queen Runa is preparing an army of replicants, and Lia and Ulysses must return to Eternia as soon as possible to help their Eternian friends. Lia suggests that Professor Hache accompany them, but he flatly refuses. Why? What's stopping him from going with them? What secret is the professor hiding? Get ready to follow them on an adventure filled with mysteries, new battles, and the greatest challenge of all: standing up to the ruthless Rune Queen.