Best-selling author Sophie Brown is seeking solace in Scotland after the uproar caused by her latest book, where she controversially killed off the male lead, coinciding with her recent divorce. The amount of backlash she faces was amplified by an explosive television interview, prompting her retreat to her father's hometown of Dunbar. Here, she is greeted warmly by locals who are avid supporters of her writing, even in light of her last installment.
While touring the nearby Dun Dunbar castle, a place rich with family history where her grandfather once worked, Sophie crosses paths with a mysterious man, who abruptly evicts her from a restricted area of the castle. Back at the cozy B&B, she bonds with the charming local knitting club. Through their casual chats, she shares insights about her daughter Lexie and reveals more about her father, Callum McGuinty, fostering a sense of camaraderie with the group.
As Sophie learns that the castle is for sale, she encounters its owner, the dashing Myles Dunbar. Their initial meeting is fraught with tension, as both are astounded to find they had met the previous day. Despite her growing feelings for him, Sophie must contend with Myles's gruff demeanor. After some back and forth, Myles proposes a unique arrangement: a 90-day escrow with a non-refundable deposit, allowing them both to reside in the castle simultaneously.
During her re-exploration of the castle, Sophie discovers its many flaws—including faulty wiring and a leaky roof—and a personal connection emerges when she finds a door jamb etched with her last name. This discovery reveals her family's ties to the castle, igniting her emotional journey.
As time passes, Sophie continues to integrate into the community, using her hairdressing skills to connect with the knitting club. They band together to spruce up her castle accommodations and share stories about their lives and struggles, including Myles's efforts to alleviate the local farmland debt. Tragically, Sophie learns that Lexie won't be celebrating Christmas with her this year, as her ex-husband is remarrying.
In a poignant moment, Myles takes Sophie to the Dun Glen Holy Wishing Well, where he shares tales of past Christmas celebrations held by the first duke and duchess, inspiring Sophie to consider hosting a similar event for the village. They share laughter and chemistry at the local pub, though they dance around their mutual attraction.
Sophie’s talents as a tour guide flourish, and despite grappling with writer's block and an impatient editor, her charm wins over visitors. However, tension rises when Myles confronts Sophie about her presence—only for her to declare her determination to stay.
As they gather a Christmas tree together in the woods, the knitting club festively decorates the castle, their spirits uplifted by song. On Christmas Eve, Sophie tries on a beautiful gown for the upcoming celebration, but a playful pup, Hamish, leads her to Myles's door. Their undeniable attraction culminates in a passionate night together, but the next morning brings a rift when Sophie suggests he remain with her. Heartbroken, she decides to leave, feeling defeated.
In a final twist, as she attempts to depart, Myles tracks her down and professes his love, successfully bringing Lexie in just in time for their shared Christmas celebration. In the climactic finale, Sophie finds herself back in the spotlight, appearing on a talk show to promote her new best-seller, a testament to her resilience and newfound happiness.
