Champer wants to draw the best adventure ever to win a Super Numtum comic competition so he and Billy set off on an adventure to find the Giant Shimmering Sandcastle in the Big Sandy Desert. But when they get there, they find there's a giant hole in the ground separating them from the Giant Shimmering Sandcastle. How will they jump over it? Meanwhile, on the Adventures of Super Numtum show, Fluffy tries to get into a baddy's big bad slumber party, taking six custard pies with her to throw at the guests inside.