Leslie and the parks team put together a memorial service for a dearly departed friend. Meanwhile, Tom makes a big life decision, while Chris reacts badly to a health problem.

Leslie is torn between Ben and her dreams of running for public office, while Ron braces himself for the arrival of his first wife, the original Tammy.

Leslie's book about Pawnee comes out just in time for her campaign. Ann tries to bond with Ron and April.

Leslie enlists the help of Ben, Andy and April to host a Model U.N. for Pawnee Central High School. Chris asks Ann for her advice on love when a date cancels on him. Meanwhile, Ron struggles to find a replacement for Tom.

Unable to get work done from inside the Parks Department, Leslie forms a citizen action group and fights from the outside. Meanwhile, everyone in the office brainstorms ideas for what to get Leslie for Christmas.

Leslie enlists everyone's help in staging an attention-getting event. Ben takes up a new hobby, while April and Andy adopt a pet.