A week later, Andy has not told anyone about her pregnancy. At her sister Jill’s 42nd birthday party, she reflects on how different this is from her idealized vision of motherhood. Jill’s husband, Kyle, asks if Andy is okay, noting she looks tired. Andy mentions an upcoming work trip to Anguilla to cover the wedding of pop music stars Harper Hallow and Clarence “Mack” Dexter.

In a flashback, Andy recalls Emily pitching the idea for The Plunge at a spa on the Riviera Maya on Mexico’s Yucatán Peninsula. Emily outlined her vision for an aspirational, ultra-luxe wedding magazine. Andy suggested the name The Plunge, and Emily declared it perfect. The magazine became a success, with Max Harrison as the largest single investor. Andy and Emily own a combined 66%, giving them control. Their breakthrough came from Max’s connection to a lavish high-society wedding.

Back at the party, Andy’s mother mentions seeing Roberta Fineman, who revealed that Andy’s ex-boyfriend, Alex, has finished his master’s degree and is moving back to New York with his girlfriend, whom Roberta hopes he will marry soon. Andy remembers awkwardly running into Alex at Whole Foods three years earlier, when she had just started dating Max, and feeling hurt when he didn’t ask to meet up with her again. That night, in her childhood bedroom, Andy calls Lily and blurts out that she is pregnant. She tells Lily everything about Barbara’s letter, the Katherine situation, and her conflicted feelings. Lily advises Andy to embrace her messy reality and let go of her idealized expectations.

Andy arrives in Anguilla after an exhausting journey, intensified by her pregnancy symptoms. The ultra-luxury resort is stunning, with thatched-roof villas and open-air amenities. In her suite’s outdoor soaking tub, she realizes she wants a son and thinks about how Max has always said they will have girls.

The concierge, Ronald, calls to say the rehearsal dinner begins in an hour. At the poolside pavilion, Andy is seated by Harper’s publicist, Annabelle, at a table with other guests. She is shocked to hear a familiar voice—Nigel, her former mentor from Runway. Also at the table are former Runway colleagues Jessica and Serena. Nigel greets Andy with passive-aggressive comments about how she abandoned him in Paris, though Andy tried repeatedly to contact him afterward. Jessica and Serena are cold and dismissive. During the toasts, Andy excuses herself and calls Emily, panicked about the Runway reunion.

Emily reveals that Elias-Clark’s lawyer called her directly to discuss acquiring The Plunge. Andy reminds Emily that Miranda Priestly is editorial director of Elias-Clark: If the acquisition goes through, Miranda will be their boss again. Emily brushes off her concerns and asks Andy to keep an open mind, insisting that it is just a meeting. Andy agrees reluctantly but is plagued by a vivid flashback of a horrific Runway meeting where Miranda summoned four top party planners to pitch simultaneously, systematically humiliating them in front of their competitors. The memory solidifies Andy’s terror at working for Miranda again.

Max surprises Andy by picking her up from work in a cab. Their romantic mood shatters when an ad for Bermuda tourism appears on the taxi TV. At home, Andy locks herself in the bathroom for a bath, examining her body for pregnancy signs. She puts on a terry-cloth robe embroidered with “Mrs. Harrison,” which reminds her of her argument with Max about changing her name. Initially, she had refused, wanting to keep her professional identity as Sachs, but they compromised when she saw how much it meant to Max.

In the bedroom, Max tries to be intimate, but Andy pushes him away. He tells her she needs to let the Katherine situation go, insisting nothing happened. Andy whispers that she is pregnant. Max is stunned, then overjoyed, immediately calling his secretary to clear his schedule for her gynecologist appointment the next morning. He massages her feet while talking about their future baby, whom he assumes will be a girl, and insists they cancel their Fiji honeymoon for safety.

The next morning, they have breakfast at Sarabeth’s before the appointment. Dr. Kramer performs a transvaginal ultrasound, explaining that the fetus is too small for an abdominal scan. On the screen, they see and hear the baby’s heartbeat, which sounds like a galloping horse. Both are moved to tears. Dr. Kramer tells them Andy is 10 weeks and five days pregnant, with a due date of June 1. The experience solidifies Andy’s resolve to forgive Max and make their marriage work for the baby.

Andy arrives late at The Plunge offices, located in a converted Chelsea lumberyard. Max calls to suggest they host a family dinner to announce the pregnancy, inviting both their families. Emily tells Andy that Miranda Priestly’s assistant, Charla, called that morning to request a meeting in two weeks. Andy is shocked and refuses to go, citing her self-respect. Emily admits she already confirmed the appointment.

They argue. Andy declares that she will never step foot in Miranda’s office again, but Emily insists that when Miranda Priestly calls, you go. She pleads—promising Shake Shack—and Andy finally relents, jokingly adding a onesie for her baby to her demands. Emily stops short, realizing Andy is pregnant. She is shocked by the timing and unsupportive, focusing on how a baby will affect the magazine and wondering what Barbara will say. She wonders aloud whether Max is the father, implying that Andy might have had an affair. As Andy grows increasingly hurt, Agatha—an office assistant at The Plunge—interrupts to summon Emily elsewhere. As Emily leaves, she tells Andy that they need to focus on the meeting and advises Andy to wear something that will hide any baby bump. Alone, Andy smiles and places her hands on her belly, the thought of the baby melting away her other worries.

Two weeks later, Andy and Emily meet at a Starbucks near the Elias-Clark offices, both extremely nervous. In the lobby, they spot Jocelyn, Runway’s beauty director, looking as young and glamorous as ever. Andy has a moment of panic and wants to flee, but Emily pulls her onto the elevator. They arrive at Miranda’s corporate office on the 18th floor.

The receptionist immediately escorts them to Miranda’s suite, where they find an anteroom with two assistant desks. Miranda emerges and issues rapid-fire directives to Charla, ignoring Andy and Emily completely. After an unbearably awkward silence, she finally looks at them without recognition and curtly asks why they are there. Emily explains that they are there for the meeting Miranda requested about acquiring The Plunge. Miranda claims not to remember them. She lists several memorable former assistants who had breakdowns or filed charges, concluding that Andy and Emily must not have been that interesting.

Stanley Grogin enters and hands them packets containing Elias-Clark’s offer. Andy’s focus blurs until she sees the purchase price: millions of dollars. Miranda states she is impressed with The Plunge’s elegance and success. When her car is announced, Miranda gives them a curt nod and sweeps out. Andy and Emily flee the office in shock.

At Starbucks, Emily is ecstatic about the offer, but Andy points to a clause requiring the senior editorial team to stay on for one year to manage the transition. Emily dismisses this, saying it is just a year, but Andy reminds her she already proved she cannot work for Miranda that long. The argument escalates. Emily insists this is a dream opportunity bigger than Andy’s feelings. Andy says she loves The Plunge and is not ready to give it up. Emily accuses Andy of not seeing the big picture. The conversation ends tensely, with their partnership suddenly strained.