A rival ad agency tries to poach Don from Sterling Cooper, and they involve Betty in their campaign to land him; romantic rivals vie for Peggy's affections. Also, the agency steps up its Nixon presidential campaign in an attempt to counter successful Kennedy promos.

Peggy is assigned a difficult project; Don seizes the opportunity provided by Roger's latest work woes; a frustrated Pete develops more problems at home and in the office; Betty seeks new relief for her mounting frustrations.