The episode begins with rehearsals for the 82nd annual Father's Day Follies. Cindy and her dad do a martial arts demonstration and Libby and her father do a magic act. Hugh and Jimmy are performing, but Hugh wants them to do the Ducky-Daddles Dance Song. Jimmy pretends to sprain his ankle, so Hugh rehearses alone. As expected, Hugh is horrible.
Jimmy heads to the lab where he invents the Neutron De-Dorkinator, an invention that freezes the brain's cortex and makes a person become cool. Jimmy uses it on Hugh, only to find that Hugh isn't any cooler the next morning. After school, Jimmy heads to the Candy Bar where he asks Sheen and Carl for help, but they are banned from the Father's Day Follies. When Hugh comes to the Candy Bar to pick up Jimmy, he has become cool (so cool, that Nick has to lie low). Hugh gets a job singing at the Candy Bar and gets a motorcycle.
Hugh's coolness spirals him into fame and success, and onto TV. Unforunately, the more famous Hugh becomes, the less time he spends with Jimmy and Jimmy begins to miss the old Hugh. He was going to use the De-Dorkinator on him again, but Hugh crushed it. To get Hugh back to normal and prevent him from going on a world tour, Jimmy comes up with a plan. He decides to go to the TV studio and place himself in danger, hoping to re-awaken Hugh's paternal instinct. The plan fails, but when Carl and Sheen break the safety net, Hugh saves Jimmy from falling. In the end, Hugh and Jimmy perform the duck dance at the follies.