With the help of Fing, Skool (a friend of Fing's in an old-fashioned diving suit), Conductor Jones, Rosa the bus driver, and the Slaterunners (a tribe of people who walk only on roofs), Zanna and Deeba make their way to the Propheseers where they learn more about the Smog. Apparently, after the Smog was created in London, a group of weatherwitches called the "Armets" battled it with a magic weapon called the "Klinneract." However, the Smog was not killed. Instead, it travelled to UnLondon. It is prophesied in The Book (a talking tome) that the Shwazzy would come one day and save UnLondon.