A novel that helps you understand how our planet and its climate work. Tristam Drake was born on a cloud floating above the ocean at a height of two kilometers. The town in which he was born was built to hide Princess Myrtille, the daughter of the King of the Northern Clouds, deposed by a cruel tyrant, from her pursuers. On the day when the despot's soldiers discover the cloud where Myrtille was hiding and take the inhabitants of the town captive , only Tristam and his friend Tom manage to escape. In search of the princess, they uncover the tyrant's sinister plan: to change the earth's climate and use natural phenomena as weapons. To prevent the implementation of this plan, the friends have to travel across the sky. They will learn what lightning and clouds are, what hides in the darkness between the stars, why the sky is blue during the day and red in the evening... Christophe Galfar is a student and co-author of Stephen Hawking, who participated in writing the book “George and the Secrets of the Universe.” "The Prince of the Clouds" is his first novel.