Atlas Farstrider and the Crystal Throne

Atlas Farstrider lives in a sagging cabin in the middle of a snot-coloured swamp with his negligent foster-family, until one day, he receives a letter from Hogwarts, sweeping him into a new world of wonders. But not all is well in the wizarding world, and as dark forces stir, Atlas must seek out a secret that may save Hogwarts, or destroy it.