Megan has second thoughts on her career path after the success with Heinz but finds it difficult to tell Don. Peggy, unwittingly caught between the two when Megan's lie comes to light, finally lets her frustrations be known to both Megan and Don. Pete finds that his increasing success at the firm does not fill the emptiness of his life. After a chance encounter one evening with a neighbor, he becomes obsessed with wanting to repeat the experience. Don returns to creative work full throttle, only to find the cultural changes of the 1960s have left him behind.