Leslie passes a city-wide tax on huge sodas in hope of combating obesity in Pawnee; Chris helps Andy prepare for his police entrance exam.
Ann plans a bachelorette party for Leslie, but Councilman Jamm derails the event; Chris has a game night at Ben's.
Leslie travels to London to accept an award; Tom hunts down a businessman; Ann and Chris take their relationship to the next level.
Leslie commemorates her first year as a city councilor; April receives life-changing news; Tom considers a business opportunity.