The Company of Cartographers have but one aim. Venture to distant lands and map their stories and legends. Only what are they to do when the stories turn out to be true... Adelia Wray is finally going on a real adventure! One with mountains, forests, and the occasional smelly animal. There's just one problem. She has to share it with the most annoying boy in the world, her partner Cai. And as the company's future looks to be in doubt, Adelia realises that her first adventure might also be her last. But when the pair encounter a legendary Thunder Ram, a rare animal with terrible indigestion, Adelia and Cai must put their rivalry aside if they are to save the majestic creature from those who seek to do it harm. From entombing fog to grumpy nature-witches, the Company of Cartographers must learn to work together, or risk losing their dream of adventure forever. The Age of Exploration isn't over yet... It's just changing direction!