Harriet arrives at the Maine cottage and discovers Wyn is there despite their secret five-month breakup.

Sabrina and Parth announce the family cottage is being sold and that they are getting married that weekend.

Harriet and Wyn privately agree to fake being a couple for the week and set strict physical boundaries.

Wyn insists Harriet put the engagement ring back on so their friends will not grow suspicious.

Harriet and Wyn get accidentally locked in the wine cellar together and nearly kiss.

At the group's favorite dive bar, Harriet sits on Wyn's lap and their physical tension escalates publicly.

On the Lobster Festival Ferris wheel, Harriet gives Wyn a pottery vase she named Hank in honor of his late father.

Harriet and Wyn kiss in the pool after the Ferris wheel, though Harriet insists it is part of their act.

Flashback: Wyn proposes to Harriet spontaneously in their New York City apartment and she accepts without hesitation.

Harriet accidentally picks up Wyn's phone and reads a text from his mother Gloria, assuming he is ready to move on.

Harriet breaks down crying before the bachelorette party and Wyn confesses he ended things to protect her, not because of Martin.

A tattoo parlor fight erupts and Sabrina reveals she has known about the breakup the entire week.

Harriet finds Cleo at the coffee shop on the wedding morning and Cleo reveals she is pregnant.

The three friends find Sabrina crying at the coastal chapel, reconcile, and celebrate Sabrina and Parth's intimate beach wedding.

Harriet rushes through the airport to find Wyn and declares she chooses him and wants to move to Montana on her own terms.

Harriet arrives at the Maine cottage expecting to finally tell her friends about her breakup, only to find Wyn already there and the week upended by Sabrina and Parth's surprise wedding announcement. Forced into a fake romance they both still feel, Harriet and Wyn navigate physical tension, old wounds, and mounting lies. Key confrontations—locked in a cellar, a poolside kiss, a bachelorette party breakdown—push them toward the truth they have been avoiding. Sabrina's explosive revelation that she already knew about the breakup forces the entire friend group to stop pretending, triggering an honest reckoning among the three women. The friends reconcile at a coastal chapel before celebrating Sabrina and Parth's wedding, clearing the way for Harriet's most important decision. Racing through the airport, Harriet chooses Wyn on her own terms and commits to building a new life together in Montana.

The central romance and the high stakes of pretending to be in love.

Flashback: Harriet, Sabrina, and Cleo become inseparable college roommates, Harriet's first truly close friendships.

Flashback: Harriet returns from a semester abroad in London and meets Wyn, her new roommate, feeling immediately drawn to him.

Harriet wakes up hungover wearing Wyn's shirt and he asks if she is happy, but Parth's air horn interrupts before she can answer.

The group visits the Murder She Read bookstore and Harriet notices Wyn texting constantly and buying an expensive coffee table book.

Flashback: During an earlier Maine summer, Cleo asks the group what they would do in another life and Wyn says he would return to Montana.

At a stormy diner breakfast, the group each secretly picks one personal wish they hope to see fulfilled by the end of the week.

At a horror movie, Harriet finally buries herself in Wyn's chest at a terrifying scene and then rushes outside for air.

Flashback: Martin kisses Harriet unexpectedly after a night out with hospital colleagues and she immediately calls Wyn to tell him.

Harriet and Wyn almost have sex in their room after the pool kiss but Wyn stops them and leaves for a walk.

During the ocean boat trip, Sabrina snaps at Cleo over a crab preserve joke and Kimmy sternly steps in to defend Cleo.

During the escalating friend group fight, Cleo tells Harriet she should have leaned on her friends instead of shutting them out.

Harriet and Wyn have sex after fully resolving their misunderstandings, both promising to be more open and honest going forward.

On the wedding morning, Sabrina disappears from the cottage and cannot be reached on her phone.

Harriet formally withdraws from her surgical residency and calls her parents, standing firm despite her mother's tears and protests.

Harriet and Wyn move into a Bozeman apartment, visit Gloria regularly, and set a date for their own wedding.

This pool follows the subtler threads of the Maine week—the bookshop visit, the stormy diner breakfast, the horror movie outing—that reveal the group's changing dynamics and deepen the tension between Harriet and Wyn. Flashbacks trace how Harriet first met her friends in college and how she and Wyn became roommates, establishing the roots of everything at stake. The ocean boat trip and the friend group's escalating argument expose how much Sabrina, Cleo, and Harriet have been keeping from one another. After the big fight forces honesty, Harriet and Wyn finally resolve their lingering misunderstandings and reconnect physically. The wedding morning brings one last crisis when Sabrina goes missing, before the resolution arrives and Harriet takes the brave step of leaving her medical career behind. The pool closes with Harriet and Wyn settled in Montana, their future finally open and certain.

Hidden secrets, shifting friendships, and the quieter moments that shape the week.

Flashback: Harriet and Wyn grow close in college through long nightly conversations, banter, and Harriet tutoring him in math.

Flashback: Harriet and Wyn share their first secret kiss in the Maine cottage cellar during a game of hide and seek.

Flashback: On their first real date, Wyn tells Harriet he thinks he loves her and she says she already knows she loves him.

Flashback: Wyn and Harriet announce their relationship to their friends, who open champagne and warn the couple never to break up.

Flashback: Harriet visits Wyn's warm, affectionate Montana family for the holidays and begins to think of it as home.

Flashback: Harriet's mother privately warns her that Wyn is not ambitious enough and that her career matters more than feelings.

Flashback: Wyn grows severely depressed after his father's death, crying secretly at night while Harriet hides her own grief in the shower.

Flashback: Gloria is diagnosed with Parkinson's disease and Harriet suggests Wyn stay in Montana to help his mother and sisters.

Trapped in the wine cellar, Wyn asks Harriet a second time if she is truly happy and she finally says that she is.

At the movie theater, Wyn tells Harriet he never blamed her for Martin's kiss and that the breakup was entirely his own decision.

After the friend group fight ends, Harriet realizes for the first time that she has never truly wanted to be a surgeon.

On the car ride back from failed cake shopping, Wyn shows Harriet his thriving wood-slab furniture business website and she feels proud.

Wyn finds Harriet working alone in a pottery studio and she courageously tells him she hates surgery and wants to quit medicine.

At her airport gate, Harriet realizes Wyn is afraid she will never truly choose him and turns back to find him.

Harriet's parents visit Montana and her mother admits she only wants Harriet to be happy, not to repeat her own mistakes.

This pool traces the deeper arc of how Harriet and Wyn fell in love, why they fell apart, and what each needed to admit before they could find their way back. Flashbacks move from their first tentative closeness in college through their first kiss, their relationship announcement, a formative holiday in Montana, and the devastating period of grief that broke them. Key revelations in the present—Wyn admitting he never blamed Harriet for Martin's kiss, Harriet confessing she has always hated surgery, Wyn unveiling his secret furniture business—dismantle the misunderstandings that separated them. A post-fight moment of clarity and a pottery studio confession mark the turning points where both characters finally stop prioritizing everyone else's happiness above their own. The pool closes with Harriet's parents visiting Montana and her mother's admission that she only ever wanted her daughter to be genuinely happy.

The backstory decisions, discoveries, and emotional breakthroughs that explain everything.