From #1 bestselling author David Walliams comes his most epic adventure yet, illustrated by Tony Ross. This is the story of Elsie, a 10-year-old orphan, and a 10,000-year-old woolly mammoth. When Elsie hears about the Ice Monster found in the Arctic, she embarks on an unforgettable adventure from Victorian London to the North Pole. Heroes come in all shapes and sizes in this thrilling tale!