Sasha Worth, director of special promotions at Zoose, a travel app company, is drowning. Unanswered emails pile up, her workload has tripled since two colleagues left without replacement, and her boss Asher ignores her pleas for help. At home, her life has narrowed to the same meal every night,
Legally Blonde on repeat, and no interest in sex or dating since splitting with her ex Stuart a year ago.
The breaking point arrives when Joanne, Zoose's well-being officer and Asher's loyal ally, tells Sasha that yet another colleague has quit and Sasha must absorb the work. Sasha flees the office and asks to join the convent across the street. The nuns turn her away. Joanne tracks her down; Sasha runs, crashes headfirst into a brick wall, and ends up in the hospital, signed off work for three weeks with burnout.
Sasha's mother arranges for her to recuperate at the Rilston Hotel in Rilston Bay, a seaside resort the family visited every childhood summer until Sasha's father was diagnosed with a terminal illness twenty years earlier. Mum packs wellness supplies from an app called 20 Steps to a Better You. On the train, Sasha clashes with a rude, dark-haired man carrying a surfboard who snaps at a toddler for slapping his board.
The Rilston is a place of genteel decay run by a skeleton crew. Herbert, the elderly porter, can barely carry luggage. Cassidy, the receptionist, explains the hotel is broke and seeking investors. Sasha's mother has been calling pretending to be Sasha's PA, "Erin," requesting organic kale, so the staff believes Sasha is a health devotee. Because her sea-view room is blocked by scaffolding, the hotel gives Sasha daytime use of Beach Lodge 1.
Sasha's wellness program collapses. She cannot enter the freezing February sea, fails at grounding exercises, and manages only a handful of squats. She secretly stocks up on crisps, chocolate, and wine. Alone in her lodge, she has a cathartic crying session. On the beach, she writes a "manifestation," a wish to the universe requesting the return of her sexual desire, "a sexy man with a working cock," and world peace.
Her solitude ends when Finn Birchall, the rude man from the train, arrives in the lodge at the opposite end of the beach. Sasha overhears him dictating apology emails for slamming a coffee cup at work, punching a vending machine, and threatening to chainsaw an office plant; he has been sent away to "consider his behavior." When her manifestation paper blows toward him and he reads it, she claims it is song lyrics, fooling no one.
A misunderstanding precipitates a thaw. Sasha assumes Finn terrorized the young waiter Nikolai over incorrect toast, but Finn reveals that Nikolai scalded his wrist with hot coffee and his brusqueness was due to pain. Barging into Sasha's lodge to show the burn, Finn discovers her stash of junk food and undrunk kale smoothies. Both chastened, they apologize, and Sasha confesses her demanding "PA" is actually her mother.
A mysterious message appears: champagne and words in stones reading, "To the couple on the beach. Thank you." Cassidy suggests the tributes resemble those left by fans of
Young Love, a famous painting by local artist Mavis Adler depicting a teenage kiss on Rilston Beach. Over champagne at sunset, Sasha and Finn discover both had childhood surf lessons with Terry Connolly, a beloved local instructor, and likely overlapped at Rilston as children. They share favorite Terry quotes: "The ride is it" and "Infinite waves, infinite chances."
More messages appear daily, addressed to "the couple on the beach" and including the date 8/18, accompanied by gifts. Sasha and Finn spend every day together: hiking cliffs, sharing meals, and attempting yoga. They observe fellow guests Hayley and Adrian West, whose marriage is in crisis. Sasha encounters Terry at the Surf Shack; he is frail and confused but slips into his teaching persona long enough to tell her, "No one remembers the wipeouts. They remember the triumphs."
Finn challenges Sasha to stop clinging to a dysfunctional job. She realizes she has been "half-living" rather than risk failure and impulsively emails Zoose to resign. At Finn's urging, she writes a twelve-page feedback document. During a surfing session, she catches her first wave and feels euphoria. In the shallows afterward, she realizes her libido has returned, specifically for Finn. She hints she wants a casual encounter, but Finn tells her he has "sworn off casual sex." Sasha interprets this as rejection.
They help Adrian explain a misunderstanding to Hayley. Finn coaches him through a speech ending with: "Could we walk along the beach while I tell you why I fell in love with you in the first place?" Adrian reconciles with Hayley. At the hotel's investors' reception, Finn tells Sasha she is "beautiful inside and out," quotes Terry, and kisses her. They spend the night together, and the hotel staff celebrates.
Gabrielle McLean, the woman depicted in
Young Love, reveals that Finn, not her husband Patrick, was the boy in Adler's painting. Sasha's sister Kirsten reminds her that as a child, Sasha told police she saw Pete, a rival surf shop owner, burning something in a bin around the time of a kayak accident that had implicated Terry. Finn confirms he saw the same fire. Lev Harman, the founder of Zoose, tracks Sasha down after reading her feedback and acknowledges Asher must go. On the beach, Terry gives a surf lesson, assigning each pupil a "surferpower," his term for a surfer's defining strength. He tells Sasha hers is "love."
That evening, Sasha answers a phone call intended for Finn. A colleague reveals he recently ended a ten-year relationship with Olivia Parham, describes him as "hopelessly in love," and hopes they will reconcile. Sasha finds years of happy photos on Olivia's social media ending abruptly before Finn arrived in Rilston. She concludes his burnout was really heartbreak and their time together was merely two wounded people comforting each other.
At a Mavis Adler art event, Tessa Connolly, Terry's daughter, reveals herself as the author of the beach messages. As children, Sasha and Finn independently told police they saw Pete burning what appeared to be evidence, testimony that redirected the investigation and saved Terry's livelihood. Sasha tells Finn they cannot be "each other's sticking plaster" and should focus on their own recovery. Finn is pained but accepts. At the station, they exchange handwritten papers: his reads "Sasha's wellness," hers reads "Finn's wellness." Sasha boards the train alone.
Six months later, Sasha has transformed her life. Lev offers her the role of head of marketing, replacing Asher, and she accepts. She runs the department with healthy boundaries and has resumed cooking, socializing, and caring for herself. She and Finn organize a reunion of Terry's former surf pupils at Rilston Bay. Hundreds arrive, and Terry delivers one final lesson ending with: "Go get it."
At the reunion, Sasha learns Finn did not bring Olivia; the guest he collected is his mother. The breakup predated his arrival in Rilston; he had been covering for a seriously ill colleague who asked him to keep her condition confidential. Each reveals they have been carrying a manifestation paper bearing the other's name for six months. The staff and beachgoers clear the beach. Finn asks, "Could we walk along the waves while I tell you why I fell in love with you in the first place?", echoing the words he coached Adrian to say. Sasha says yes.