April and Andy host a dinner party for the Parks Department. Meanwhile, Ann tries to move on from Chris at a singles' party.

Jerry’s contribution to Leslie’s community art show causes a stir. Ben moves in with April and Andy and attempts to teach them how to be adults. Meanwhile, Leslie is frustrated by Chris and his interoffice dating rules.

Andy and April host a Halloween bash at their house. Tom emcees an event for Leslie's campaign. Andy and April receive an unusual wedding present from Ron and Ann.

Leslie works to find Ann a Valentine's date. Ron helps Ben with a scavenger hunt, and Chris becomes depressed over his love life.

Leslie gets upset when April tries to get Lot 48 made into a dog park. Meanwhile, Tom enlists Ben’s help as he tries to launch his new business venture, and Andy hones his crime scene investigation skills.

Leslie decides to give the Animal Control Department a much-needed makeover. Ann tries to get Ron the medical attention he needs. Ben, Tom, and Andy recruit donors for their charity foundation.

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.

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.

Leslie and Ron attempt to work out their differences.