Terry Pratchett’s infamous city of Ankh-Morpork is under threat fro a 60-foot fire-breathing dragon, summoned by a secret society of malcontented tradesman.

Defending Ankh-Morpork against this threat is the entire, underpaid, under-valued City Night Watch – a drunken and world-weary Corporal of dubious parentage…and their newest recruit, Lance-Constable Carrot, who is upright, literal, law-abiding and keen. Aiding them in their fight for truth, justice and the Ankh-Morporkian way are a small swamp dragon and the Librarian of Unseen University (who just happens to be an orangutan)