Peter creates a controversial comic panel for the Quahog newspaper called "For Pete's Sake," which angers local women for its sexist humor. Peter drives the Griffin family out of Quahog to escape the townspeople's ire. When they stop at a gas station, their car is stolen, leaving them stranded outside Springfield. At the Kwik-E-Mart, Homer Simpson introduces himself to the Griffins and takes them to the Springfield Police Department, where they are turned away by Chief Wiggum. The Simpson family puts up the Griffin family in their home until things improve. Bart shows Stewie his slingshot, and teaches him how to skateboard, and they become good friends. When Nelson Muntz bullies Bart, Stewie retaliates by kidnapping and torturing Nelson. Meanwhile, Lisa tries to find a talent that Meg has. When she finds that Meg is a natural at the saxophone, she downplays the talent out of jealousy. Chris and Brian take the Simpsons' dog, Santa's Little Helper, for a walk. Brian tries to teach Santa's Little Helper independence, but the latter runs off when freed. Marge notices Santa's Little Helper is missing, and Chris and Brian fake his presence until he eventually returns. Homer and Peter try different plans to find Peter's car, each one backfiring, until they discover it in the possession of Hans Moleman when he accidentally runs Peter over. The men celebrate at Moe's Tavern, but relationships sour when Peter tries to introduce Homer to Pawtucket Patriot ale. The drink is revealed to be an imitation of Duff Beer with a new label. This results in Duff, represented by the Blue Haired Lawyer, filing a lawsuit against Pawtucket Brewery for patent infringement, with Peter forced to defend the brewery to save Quahog. Fred Flintstone is the judge who presides over the case. During the trial, similar characters from both shows interact with each other including both shows' versions of James Woods. Fred rules in favor of Duff Beer, but declares that both Pawtucket Patriot Ale and Duff Beer are imitations of his own favorite beer Bud Rock. The Griffins prepare to return to Quahog, where Peter faces the prospect of finding a new job. Lisa gives Meg her saxophone, but Peter throws it away, claiming there is no room for any more luggage. Stewie points out that he took revenge on not just Nelson, but all of Bart's enemies: Nelson, Jimbo Jones, Principal Skinner, Sideshow Bob, and (for the sake of making a scatological pun) Apu. Bart is sickened by Stewie's violent tendencies and ends their friendship. Homer tries to explain his actions, but Peter reacts angrily and the two fight (à la fighting between Peter and The Giant Chicken) through Springfield. The pair gain superpowers when they hit the Springfield Nuclear Power Plant, then end up in Kang and Kodos' spaceship, where they lose their powers before landing in Springfield Gorge. Peter and Homer stop fighting and admit their respect and admiration for each other while agreeing to stay away in the future. Returning home, the Griffins find that the heat from Peter's comic has died down and the Pawtucket Brewery is safe when Lois doubts that the inhabitants of Springfield will visit Quahog to enforce the ruling. Stewie tries to pretend he is over Bart, but goes to his room crying while writing "I will not think about Bart anymore" several times on a chalkboard. (thetvdb.com)