As a toxic cloud of smog hangs over New York City during Thanksgiving 1966, Betty's bitterness over her weight gain and Megan's youth and beauty leads her to tell Sally about Anna Draper in an attempt to cause turmoil between Sally, Don, and Megan. Don and Peggy are both irritated by Michael Ginsberg's rising star, and Don takes a devious approach to clip the wings of the young copywriter. Roger gets handed a new client (Manischewitz) by Bert Cooper, but Roger's decision that he needs more Jewish input to help him involves estranged wife Jane, with unfortunate results. Pete continues to resent that his brief affair with commuter-acquaintance Howard's wife, Beth, has ended.