When the students learn their much-anticipated class trip has been cancelled due to budgetary reasons, they devise a plan to fight back. Meanwhile, Uncle Will, Dusty, Chance and Herman turn a mall upside down for a special presentation to prank a security guard.

The unexpected pranks get smellier and wilder when Uncle Will, Chance and Dusty pull off a fake commercial for "Stank Be Gone" foot spray and trick another target into thinking he's transporting a wild rhinoceros to the zoo.