Leslie and Ben work together on Indiana's smallest park. Ben wants to stop working together and so Leslie plans to extend the park project for as long as possible. Andy wants to take a college course to better himself and April and Ron go with him to sample a few different options. Chris asks Tom and Jerry to choose a new font for the Parks Department logo.
Leslie's bachelorette party goes awry when Leslie's conscience forces her to go retrieve Wamapoke artifacts which she planted at the park site to prevent a Paunch Burger from being built there. Ben's bachelor party is a quiet evening of board games until Tom suggests they go out. At a crazy new club the guys reveal that none of them has ever had a bachelor party. Chris decides that each should get to choose an activity that night and be the temporary bachelor.
April and Andy invite their friends to a dinner party and ask them to bring various things. Once there Andy lets slip that this isn't a dinner party, it's their wedding! Leslie is upset and tries to talk them out of it. Ben is trying to decide whether to stay in Pawnee and work for Chris or go back to Indianapolis. Ann and Donna end up at the same singles evening.
A local cult gathers in the park for the end of the world. Leslie, Ben and Chris go to keep an eye on things and talk to the media. Leslie is disturbed when she thinks Ben might hit it off with Shauna Malwae-Tweep. April tries to tick things off Andy's bucket list and Tom and Jean-Ralphio throw one last party in their office.
It's election day and Leslie is operating on little sleep. Jennifer offers Ben a job in Washington working on a campaign. Jerry forgot to vote, Tom had a dream that he and Ann would get back together while April is afraid she has deleted all of the Parks department files. The early results indicate that Bobby has won but a recount gives it to Leslie.