Don makes some new friends on his trip to Los Angeles; Peggy looks for romance; Duck ponders the future of Sterling Cooper.

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

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

The firm celebrates as they hit a milestone. Peggy and Paul compete to secure the same account.

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.