Nick wants to appear on a show called Smart Mouth because he believes he knows everything. Everyone tells him that he is too young so Nick makes a number 2. But his parents eventually create an antidote so now they must convince Nick to go back to normal or he will be a grown up forever.

Wayne writes a story in his lab about a detective who must solve a case that becomes extremely confusing. Some of the people look very familiar in his story. Note: This was the last episode of Honey, I Shrunk the Kids: The TV Show. Both St. Claire Entertainment and the Walt Disney Company announced that the series would end after this episode.