In this episode, Mr. Burns hires the Springfield Atoms' newest football player to be the spokesman for his liquor brand and makes Marge care for him.
The Simpson family goes to the Springfield Atoms Stadium to watch the game against the Chargers, only to find that representing a liquor company has turned Grayson into a drunken wreck who can no longer play.
Grayson says he has never really had a family, his parents having been absent from his life ever since they signed him to the NFL as a child, preferring to make money off of him rather than spend time with him.
Marge invites him to stay with the family and starts teaching him how to live like a normal person, including weaning him off of drugs and alcohol.
Mr. Burns shows up and offers to take him out on the town, but Marge forbids Grayson to go out, reminding him that he has a game to play the following day.
Upset at witnessing the argument, Grayson leaves in his Ferrari and then sends Marge a ticket for the Sports Channel's annual awards show at The Draft Pigs Center for the Performing Arts.
At the end of his speech, Grayson thanks the person that inspired him - his fiancée Kaitlyn, whom he met three days earlier and made his business manager; Marge and Burns realize that Kaitlin has replaced them.
[4][8] When an opposing team loses to the Springfield Atoms, their players board a bus to join the Winnipeg Blue Bombers of the Canadian Football League.
[9] At the Springfield Library, Marge gives out copies of children's books such as Captain Underpants, Diary of a Wimpy Kid, and Goosebumps.
[10] Tony Sokol of Den of Geek gave the episode 3.5 stars out of five stating, "'The Longest Marge' ultimately plays too safe a game to do a victory dance in the end zone.
The premise, promise and preface set up all the makings of a killer payoff, and then it cops out with a boozy Parent Trap scenario which doesn't quite satisfy.