After the ceremony, Jimmy tells Karen that five years ago, he did some drugs with a girl he barely knew; she overdosed.
He discovered that the girl who overdosed was fine; however, he was being charged with distribution of a controlled substance and facing 6–18 months of jail-time.
There is a montage of the various characters: Jimmy and Karen kiss in front of the police station as he heads in, Derek and Ivy hug as he strokes her stomach (implying she told him about the baby), Julia shows up at Michael Swift's door, and Karen and Ana hug as they look at Kyle's Tony award (as Jimmy has gone back to the police station).
The episode featured three songs, one cover ("Under Pressure" by Queen and David Bowie) and two originals, one a reprise.
"Big Finish" was written by the show's in-house songwriters Marc Shaiman and Scott Wittman.