In 1979, an unexpected turn of events at a diner disrupts the lives of the citizens in a small Minnesota town.

The Gerhardts get a surprising offer, and two unlikely murderers do their best to clean up their mess.

The Gerhardts' search for Rye intensifies. Lou takes a trip to Fargo. Peggy overhears a new theory about the Waffle Hut shooter.

Floyd responds to Kansas City’s proposal, Hanzee takes a road trip, and Lou has a realization.

Floyd takes action, and Charlie tries to prove himself. Peggy and Ed disagree about what to do next, while Lou finds himself sidelined during Ronald Reagan’s campaign tour.