Brooke Baumer

Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process. Also, Raj “breaks up” with Howard after realizing his best friend is actually hurting his confidence.

Tom (Aziz Ansari) tries to get back at Ron (Nick Offerman) by going out on a date with Ron's ex-wife Tammy (guest star Megan Mullally), while Leslie (Amy Poehler) tries to protect Ron from falling prey to her charms. Meanwhile, April (Aubrey Plaza) is assigned to work with Chris (Rob Lowe). Rashida Jones, Chris Pratt, Adam Scott, Jim O'Heir and Retta also star.

The Parks Department forms a partnership with a local company to sell energy bars at the parks in Pawnee, but Leslie (Amy Poehler) tries to stop the deal when she discovers how unhealthy the snacks are. Mark (Paul Schneider) reluctantly agrees to help Tom (Aziz Ansari) move out of his house. Nick Offerman, Aubrey Plaza and Chris Pratt also star.

Leslie launches a competition with tech company Gryzzl for a large parcel of land, which she wants to turn into a National Park. April and Andy try to regain their spontaneity. Ben is recognized at a Bicentennial gala, where Tom delivers a speech in his honor.

Leslie and Ron set their differences aside to help Jeremy Jamm get away from Tammy 2; Ben promises to help April find passion in her life; Andy and Tom go to Chicago.