Guards! Guards!

"Insurrection is in the air in the city of Ankh-Morpork. The Haves and Have-Nots are about to face off. Again. It's old news to Captain Sam Vimes of the city's ramshackle Night Watch. But this time, something is different-the Have-Nots have found the key to a dormant, lethal weapon that even they can't fully control, and they're about to unleash a campaign of terror on the city. Long believed extinct, a draco nobilis can now be seen patrolling the skies above Discworld's greatest city. Not only does this unwelcome visitor have a nasty habit of charbroiling everything in its path, but it's also soon crowned King. Can Vimes, Captain Carrot, and the rest of the Ankh-Morpork City Watch restore order (before it's burned to a crisp)? The Discworld novels can be read in any order but Guards! Guards! is the 1st book in the City Watch collection and the 8th Discworld book"--