Uncle Waldo makes a fortune when he discovers a spring that produces water that can grow hair, but he makes an enemy of a miserly tycoon who sends a hit man to remove Waldo and his friends...permanently
Waldo's latest con involves charging people to dig for diamonds in a vacant lot, but this annoys an underground race of mole people who kidnap Waldo, Fillmore and Hoppity.
Filmore Bear enters another dimension called The Traffic Zone and returns as a giant turnip. Only the Grand Asparagus knows how to change him back - and he's out of season.
When Waldo loses his entire stock of Indian Guide Elixir, he must brew another batch. Unknowingly, he includes in the mix Wottabango corn - which is explosive.