The world is not as we know it - the aliens have come down and taken all the grown-ups away and left Blue Soup to run everything. Stinky Finger and Icky Bats wander around doing exactly as they please, like all the other children. Along with Bryan Brain, they head off to Uncle Nero's House of Fun. Uncle Nero's head is still living in the mailbox outside. Before it goes off into ultra-slumber, it asks Stinky to guard the house. So the three friends go in and explore the Time Travel Garage, the Outer Space Garden, the Attic of Horrors, and the Living Living Room. Then a huge explosion goes off and they're being besieged by an army of huge pigs who want to make people pies! In order to defeat them, they'll have to make the most of the house's surreal and limitless insides.