S7E12 · Lost Horizon

Complete story — includes the ending

At McCann, Joan faces chauvinism as her accounts are mishandled by a colleague; when she complains to Ferg, he sexually harasses her and implies he will take over her accounts. She appeals to Hobart, who offers to buy out her $500,000 partnership stake at half value. Though she threatens legal action and negative publicity, she ultimately accepts the payout after Roger advises against fighting. Peggy refuses to vacate the SC&P offices until McCann assigns her proper space, bonding with Roger in the empty office—where he plays the organ as she skates—before arriving at McCann confidently once her office is ready. Don visits Betty to pick up Sally but learns she is out; Betty, now back in school, remarks on Sally's independence. Disillusioned, Don walks out of McCann's kickoff meeting for Miller Beer and drives west, imagining a conversation with Bert. Reaching Racine, Wisconsin, he poses as a debt collector to see Diana, but her remarried ex-husband exposes him and sends him away. Don continues west toward St. Paul, Minnesota, picking up a hitchhiker, while Meredith covers for his absence and Roger tells Hobart that Don's unpredictability is part of who he is.