Li'l Rascal Twins #8

The twin rascals play tricks on Cab Bunter, a handsome visitor, by pretending to be a dangerous "Atomic Mouse" with inflatable balloons for muscles. After their prank is discovered, they are taken to Professor Invento's laboratory where they promise to behave. However, they convince the Professor to shrink Cab Bunter and then reduce him further, leading to chaotic mishaps in his laboratory as they attempt an impossible task of making a "Man-Melon Tree" by mixing mysterious potions and chemical ingredients.