When Betty sees a doctor to try to get a prescription for diet pills, he discovers a nodule on her thyroid. Although the nodule is later discovered to be benign, in the meantime Betty dwells on her mortality. Harry and Don go backstage at a Rolling Stones concert after a Heinz executive suggests trying to get the band to record a jingle for their ad campaign. Pete signs Mohawk Airlines as a client and gives the account to Roger. Roger asks Peggy to hire a new copywriter for Mohawk, so she interviews Michael Ginsberg. Don gives his OK.