Dren the alien meets Helsius the planet and invites him to take a ride in his spaceship. . Throughout their travels they meet other worlds: some beautiful, some a bit strange and one... that's very sad because there's hardly any life left on him . But Dren and Helsius aren't going to abandon the poor planet. With a little help, he can go back to being the green planet he was before! . The young reader will discover the importance of helping others when they need it most and, through the story's simple yet powerful message, they'll learn and consider the consequences of not taking care of the environment. . Join Helsius and Dren in this fun interstellar adventure and explore the wonderful meaning of friendship, generosity and being ecologically friendly! . Find out why one planet moved to another. . Written & Illustrated by Alba Alcaide Navas Translated by Alex MacDonald