In a prologue set in the past, 12-year-old Ryder Colburn narrates his family's desperate flight across the rugged Sonoma, California coastline at night. He and his siblings, Caleb, Tucker, and younger sister Kiera, flee after Kiera accidentally dents their father Hank Colburn's truck. Hank, a volatile, military-bred man the children call "Captain Asshole," chases them toward hidden caves that exploit his claustrophobia. When Kiera stumbles, Ryder tosses her to his brothers and shoves them into the caves, sacrificing himself as Hank seizes him. This moment establishes Ryder's defining role as his siblings' protector.
In the present day, 27-year-old Penny Rose lives in her Grandma Nell's crumbling 1928 Queen Anne Victorian in Star Falls, a small Sonoma County town. She shares the house with her 12-year-old half brother, Wyatt, and Nell's budgie (a small parrot) named Pika-boo, known for inappropriate outbursts. Penny returned six months earlier after her mother abandoned Wyatt and Nell to work as a lounge singer on a cruise ship. In Seattle, Penny had run a ready-made meals business while in a relationship with a man named Mitch, whose charm masked escalating abuse that became physical. A bandage on Penny's jaw hides stitches from their final confrontation, and Mitch now has a temporary restraining order against him. Penny has sworn off men entirely and dreams of opening her own café, though she considers it impossible given her finances and family obligations.
Penny works as a cook at Hungry Bee Catering, run by her strict boss, Kiera Anderson, who is also Ryder's sister. Her best friend and coworker, Violet, and Violet's sister Renee are her closest confidantes. Penny knows Ryder only as a catering client. Before dawn one morning, she encounters him in Nell's upstairs hallway; he has come early to drop off Hank, for whom Nell serves as daytime caregiver. Penny finds Ryder attractive but unsettling, especially when he notices her bandage but respects her unspoken request not to ask about it.
Their connection deepens when Penny nearly gets hit by a truck while delivering food to Colburn Restorations, the historical renovation company Ryder runs. He tackles her out of the way, then tends to her injuries with quiet patience. Even when furious, he never raises his voice, which paradoxically prevents Penny from trusting him: She has learned she cannot gauge someone's true character until she has seen them lose their temper. Yet seeing Ryder at a local diner tenderly managing Abi and Alex, Kiera's toddler twins, endears him to her.
Ryder carries deep grief and guilt. Two years earlier, his best friend and business partner, Auggie, who was also Kiera's husband, died in a backcountry skiing accident. Ryder had encouraged the trip but could not attend due to a broken ankle, and he blames himself. Since Auggie's death, he has been trapped behind a desk managing the company he once built with his hands. Hank's care adds further strain: After a second stroke and craniotomy, Hank's personality transformed from abusive and volatile to gentle, nonverbal, and affectionate. No facility will take him, so Ryder, Caleb, and Tucker divided the year into caregiving shifts, deliberately shielding Kiera, who is still grieving.
Nell privately asks Ryder to take Penny out for one fun, no-pressure evening, explaining that her granddaughter has been hurt and has retreated into herself. Despite his attraction and reservations, Ryder agrees. At Auggie's gravesite on what would have been Auggie's 32nd birthday, Ryder and his brothers witness the Legend of Star Falls: a local belief that anyone who sees three falling stars arching together will have their soul mate enter their life. Caleb and Tucker cover their eyes. Ryder watches, unable to look away.
After catching Nell attempting dangerous home repairs, Ryder volunteers to renovate the family's outdated kitchen, framing it as repayment for Nell's care of Hank and a chance to return to hands-on work. Working side by side, he and Penny grow closer. He asks her out; she hesitates. When she later finds him injured at Colburn Restorations, a gash on his torso from a jobsite mishap, she cleans and glues his wound. In the vulnerability that follows, Ryder tells her about Auggie and his guilt. Penny says she is not ready for a formal date but values what they share. Ryder assures her the next move is always hers. She kisses his bandage; he kisses her jaw scar. They share their first real kiss.
Over the following weeks, the renovation draws Penny, Nell, Wyatt, and Ryder into a tight unit. Wyatt, hungry for a male role model, thrives under Ryder's mentorship. Their intimacy escalates alongside their emotional bond, deepened by conversation, cooking lessons, and Ryder's endearingly terrible attempt at baking cookies from Penny's recipe. She visits his renovated 1902 farmhouse to teach him the correct technique, and they sleep together for the first time. Ryder is patient and communicative; Penny feels safe. Afterward they talk openly, but Penny leaves rather than spend the night, recognizing she is losing pieces of herself to him.
Penny asks Ryder to dinner, surprising him with Star Falls's first food truck night in a redwood forest clearing strung with fairy lights. They eat, dance in the rain, and each confesses to falling for the other. A police officer's knock on his truck window triggers a severe panic attack in Penny, transporting her mentally to the night police responded to Mitch's assault. Ryder holds her through it without blame or frustration.
When Ryder walks Penny home, Nell inadvertently reveals that she asked Ryder to take Penny out as a favor. Penny feels humiliated, interpreting his initial interest as pity. Ryder explains that while Nell made the request, his feelings developed independently and everything between them has been real. Penny tells him she needs time. In the painful days apart, Penny confides in Violet and Renee, who affirm Ryder's genuineness. Ryder leans on his brothers, who urge him to stop letting guilt over Auggie control his life. He continues showing up for the renovation, respecting Penny's boundaries while making clear he is not going anywhere.
At Kiera's house, the siblings have an emotional reckoning. Kiera tells Ryder that Auggie's death was not his fault and demands he stop punishing himself. She admits she has pushed her family away and apologizes. At Al's Diner, Penny inadvertently reveals Hank's situation to Kiera by arriving with Nell, Wyatt, and Hank. Kiera is upset her brothers kept this secret but understands their protective instinct. She meets the transformed Hank and asks to join the caregiving schedule.
In the diner, Penny pulls Ryder aside and tells him she was wrong to retreat. She confesses that she has not merely been falling for him but has already fallen, irrevocably. His acceptance of her, fears and flaws included, taught her to accept herself. Ryder tells her he loves her and that being with her is the easiest thing he has ever done. Their families watch through the diner window, cheering. Reflecting on the Legend of Star Falls, Penny knows she will believe in it for the rest of her days.
Ryder drives Penny to the Devereux Building, the site of his first major renovation, which he is buying back. He shows her a vacant ground-floor retail space with large windows and natural light, perfect for the café she has always dreamed of opening. Penny says yes.
In an epilogue set six months later, Penny stands in the doorway of Redwood Roost, her new café, on opening day. Ryder drops to one knee and proposes. She says yes. Their combined families press their faces against the café window as Penny flings her arms around Ryder and her world falls into place.