When Hayley goes to a My Morning Jacket concert against Stan’s wishes, he crashes the show to bring her back home, but when he hears their music for the first time, it calls to him and he’s smitten. Stan becomes obsessed with the band and decides to follow them on the road as a groupie.
Principal Skinner is getting fed up with Bart's pranks, so he informs Bart that he is not the best prankster after all. A former student named Andy Hamilton is hailed as the best prankster, and Bart sets out on a mission to track Andy down. However, when Bart finds out that Andy is a 19-year-old still in his pranking days, they become fast friends.
The boys' propensity to be ambitious but rubbish, means the possibility of electrocution looms large this week, as Jeremy, James and Richard attempt to build their own electric car. On the track, the American Corvette ZR1 tries its best to compete with the German Audi R8 V10. Michael Sheen is this week's Star in a Reasonably Priced Car.