Don has a big meeting with Connie about their future relationship. Betty is the beneficiary of some interesting advice and Pete has a serious sit-down with some clients.

A deadline disrupts Sterling Cooper Draper Pryce.

Pete asks Joan to make a personal and moral sacrifice to ensure the company lands the Jaguar account. Don becomes furious after learning of the impact Megan's new profession will have on their life. Feeling unappreciated, Peggy attends lunch with Freddy Rumsen, who encourages her to make a move.

Lane's shameful secret comes to the surface with dire consequences. Don recaptures his hunger for success, and Sally experiences a major milestone.

A former client makes a return; Betty and her kids go on a trip; and Joan and Greg make plans for their future.

Sterling Cooper receives a surprise visitor; Sally has been spooked by something (or someone); and Joan receives some shocking news.

Peggy has a tough time during a particularly formidable pitch. Don calls on a potential client. Roger and Jane have an experience with LSD.

Don receives a troubling letter. A risky venture entails a new future for Peggy. Roger gets an unexpected phone call. Pete butts heads with Cutler.

Don and Peggy are faced with life-altering decisions.

Lane attempts to land an account with Jaguar Cars, leading to a altercation with Pete. Pete and Trudy host a dinner party in the suburbs.

Peggy's taste in men proves questionable. Pete has to make a big decision about his career and a candidate makes a big impression on Don.

As Thanksgiving approaches, Don's work responsibilities interfere with his domestic life. Peggy is given a new opportunity, provoking the ire of some of her colleagues. Betty makes a startling discovery.

Peggy is forced to face some unpleasant facts about a client's discriminatory business practices. Don and Faye's burgeoning relationship is tested when Sally runs away from home and turns up at the office. Roger tries to rekindle his affair with Joan.

In the midst of a crisis, Don runs into an old friend.

On election night, the Sterling Cooper staff pulls a rowdy all-nighter while watching the returns. Pete's ambitions cause him to directly challenge Don. Don remembers his past as a soldier in the Korean War.

Don takes a trip. Joan has scheduling problems. Don and Lane get to know each other a little better.

An unannounced visitor at the Francis home rattles Betty.

Don is honored at a banquet for the American Cancer Society, but finds his professional reputation has been damaged. Sally lends a hand to a relative. Megan's parents come to visit from Canada.

Don receives a reward for his work. Joan butts heads with her co-worker on an account. Faced with a big decision, Roger dodges.

The office scrambles without Don; Betty learns some disconcerting news.

Don and Pete disregard Roger's plans in order to land a new client.

Peggy clashes with her new creative partner; Don pitches under unusual circumstances.

Joan and Peggy deal with high-jinx in the office.

Don has an encounter with someone from the past. Meanwhile, Roger increases Peggy's workload, and Joan comes to a momentous decision.

Roger seeks to expand his affair with Megan's mother. Pete has a "last" encounter with Beth with lasting repercussions. Megan struggles to find acting work and asks for Don's help getting an audition. Peggy still seeks Don's approval.