"Change is afoot in Ankh-Morpork--Discworld's first steam engine has arrived, and once again Moist von Lipwig finds himself with a new and challenging job"--

Postmaster General Moist von Lipwig, who runs the Ankh-Morpork Post Office, and although he is a former arch-swindler and confidence man, has exceeded all expectations. So it's somewhat disconcerting when Lord Vetinari summons Moist to the palace and asks if he would like to make some real money, he's referring, rather, to the Royal Mint of Ankh-Morpork--a new opportunity or is it?

Lobsang's pursuit of a human life, Joshua's search for his father and the adaptation efforts of "the Next" post-humans are challenged by a voracious alien race that would conquer and colonize the Long Earth. "2045-2059. Human society continues to evolve on Datum Earth, its battered and weary origin planet, as the spread of humanity progresses throughout the many Earths beyond. Lobsang, now an elderly and complex AI, suffers a breakdown, and disguised...