Ron and Diane take a big step forward in their relationship. Leslie goes to London. Ben and Andy try to get a grant, and Tom discovers the identity of his new rival.
Leslie wins an award from an international Women in Government organization, and travels to London with Ben, Andy, April and Ron to accept it. Tom hunts down the mysterious businessman who is trying to put Rent-a-Swag out of business, while Ann and Chris settle into the next phase of their relationship.
Leslie, Ben and Chris visit Eagleton to discuss financial matters with city councilor Ingrid de Forest. Meanwhile, Ann takes April to vet school orientation and Ron works to "get off the grid."
Leslie pairs up the Pawnee Parks employees with their Eagleton counterparts. Meanwhile Ben and Chris reunite for an accounting project, and Ann reveals her plans for the future.
Leslie tries to calm a minor scandal that gets blown out of proportion. Tom tries to impress a new love interest, while Ben convinces Ron to prepare his last will and testament.
Leslie throws Ben a birthday bash but is forced to leave early for an emergency late-night filibuster. Tom tries to make some memories with his new girlfriend, Ron and Donna go hunting, and April reconnects with Andy.
Leslie prepares a haunted house with Ben, Ann and Chris for Halloween on the day of the recall vote. Meanwhile, Tom fears the end of Rent-A-Swag and persuades Ron to help save his business.
Leslie tries to complete some of her biggest city council goals, like hosting an NFL Play 60 event with the Indianapolis Colts, and trying to add fluoride to Pawnee's drinking water. Meanwhile, Chris and Ron attempt to bond while building cribs for their future children.
Leslie goes toe-to-toe with Councilman Jamm in a marathon negotiating session. Ben is in between jobs and takes up an interesting hobby to pass the time. Meanwhile, Ron employs Tom, April and Donna to help sell his cabin in the woods.
Leslie comes to terms with her last day in office and plans for the future with Ben. Chris and Ann find out the sex of their child, Andy comes home from London, and Tom looks to the future.
Leslie and Ben both face new challenges on the first day of new jobs. Donna, April and Andy play a prank on Ben, while Tom prepares for a big presentation. Meanwhile Ann and Chris contemplate taking a big leap together.
Leslie fights with Ben over questionable sales techniques at the local farmers market. Ann searches for a way to vent about the annoying aspects of pregnancy, while April supports Andy in a new creative venture.
On Ann and Chris's last night in Pawnee, Leslie throws a grand farewell party and attempts to fulfill one last promise. Meanwhile, Tom, Ben, Ron and Andy struggle to find the perfect going away gift for Chris.
Ben attempts to surprise Leslie with a special anniversary gift. Tom and Adam try to help Leslie bring positive light to the Pawnee-Eagleton merger, while April asserts her new authority as Donna's boss.
After Leslie tries to take down the wall separating Pawnee and Eagleton, her life takes several unexpected turns. Tom and Ben meet with potential corporate sponsors for the concert, while Ron brings a surprise to the office and finds a new office hobby.
Leslie aims to create a new town slogan, but runs afoul of local shock jocks. Andy scouts bands to play the Unity Concert and discovers an interesting secret about Ron, while Tom looks for a restaurant locale with Donna and April.
Leslie throws a hasty Galentine's Day in an attempt to find a replacement for Ann. Tom and Ben look to finalize a deal on tents for the Unity Concert, while Ron finds himself looking after Andy.
Leslie helps organize the high school's Senior Prom, and battles with Ron over the future employment of a bright high school senior. Andy takes an unwilling April as his date, and Tom is tasked with DJ'ing and agrees to let Ben help.
In the midst of flu season, a sick Leslie and Andy struggle to book performers for the Unity Concert. Meanwhile, Tom heads to a wine competition in search of a sommelier for his new restaurant, and Ben seeks drunken help from Ron with a personal problem.
Leslie and Ben run a charity auction to raise funds for the unity concert. April steps in to manage Andy's schedule, while Donna asks Ron for help with her ex-boyfriend.
Leslie debates whether to take the job with the National Parks Service during a convention in San Francisco. Ben tries to get free wi-fi for Pawnee. Tom decides to open his bistro early.
Leslie, Ben, and Andy head to San Francisco for a National Parks Conference. Tom opens his restaurant, Ron has another run-in with his ex-wife Tammy 2, Andy lives a rock and roll fantasy, and Leslie makes a huge decision about her future.
