Wizardweek enters its third day. The participants embark on the first half of a journey that will take them across most of Grundo, beginning at the Great Volcano and proceeding through the Great Desert, Woodley Bog, and Boggley Wood before camping for the night in Gimmick's Valley. The race gets underway, and the Trio take a sizeable lead. Into the Great Desert, however, Gimmick realizes that the Airship is a little low on coal, and so they stop near the Mudblup caves. Gimmick uses what he thinks is the Third Crystal on Grubby, in order to make him invisible so he can procure coal from the caves. However, Grubby starts talking in slo- mo instead of disappearing. The Trio conclude that the Fifth Crystal can accelerate or decelerate objects. The Third Crystal is put to use, and the Trio steal... er, fetch coal from the caves. Just after the Trio depart, Wooly finds the Trio's footprints and follows them into the caves, and everyone else save the Surf Grunges follows Wooly. Meanwhile, Quellor learns of Tweeg's participation in Wizardweek and sends Drudge, Sludge, and Trudge to collect him. The henchmen catch up with Tweeg on the edge of Woodley Bog, but LB convinces them that Tweeg has a fatal contagious disease and frightens the henchmen off. Quellor is not pleased. The participants rest for the night.