Don's father-in-law pays a visit to his daughter's family. Peggy works hard on a campaign while the firm tries to decide if they will accommodate an unusual request from a client. Elsewhere, Roger plans a wedding.

Sally's behavior causes concern for Don and Betty. Betty has an eye-opening dream that has a strange effect on her. Pete tries to work a new business angle in his dealings.

Betty tries her hand at local politics. Don is forced into thinking about the future. Peggy receives a luxurious gift.

There is trouble for Don and Sal in giving their clients what they ask for. Meanwhile, Betty hosts a fundraiser.

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

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