Olivia, the eldest daughter of a once-prosperous trading family, is left destitute after her father dies in an accident and the business collapses. Facing the prospect of selling herself to support her mother and younger siblings, she is intercepted by two well-dressed men who make a startling proposal: they want her to come to the Allstatt mansion, be loved by its current master, and die. The mansion is haunted by a curse passed down through three generations—any woman the head of the family genuinely loves will die. By offering herself as the final victim, Olivia can break the curse and secure a payment of one hundred gold coins for her family. She accepts without hesitation.

The master of the mansion is Klass Allstatt, a brilliant historian whose gift for language has earned him the description of a man loved by words. Outside his scholarship, however, he is clumsy and socially awkward, having spent his adult life avoiding romantic connection to keep the curse from claiming another life. From their first meeting, Klass is drawn to Olivia despite his every effort to resist, and his attempts to deny his feelings become increasingly comical and transparent. Olivia, for her part, resolves to make him love her as quickly as possible so that she can fulfill her contract and save her family.

The story unfolds across the quiet, seasonal rhythm of life inside the Allstatt mansion. Olivia gradually integrates into the household, which is staffed by a small group of devoted retainers. Connie, Klass's capable assistant, handles the practical affairs that Klass cannot manage, while the elderly Tobias, who has served three generations of Allstatt masters, watches over the family legacy with fierce loyalty. Together they form a tight-knit, gently humorous community that fills the lonely halls with warmth.

As summer turns to autumn and then to winter, Olivia and Klass grow closer in a slow, intimate dance of stolen glances and small acts of care. Olivia's resolve begins to change from simple duty into genuine affection, while Klass, despite his verbal denials, finds himself falling deeper in love. The approaching deadline of the December full moon—the time when the curse is said to claim its victim—casts an increasingly melancholic shadow over their shared happiness. The narrative juxtaposes the sweetness of everyday moments, such as sharing meals or watching the garden flowers bloom, with the quiet dread that each happy day brings closer the moment Olivia might die.

The story explores themes of sacrifice, the nature of love, and the cost of breaking generational trauma. Olivia's pragmatic courage contrasts with Klass's desperate sense of responsibility, and the household's communal loyalty adds depth to the central romance. The curse originated from a wronged wife three generations earlier, and part of the resolution involves understanding how the curse came to be and whether it can truly be undone. The ending, while avoiding spoilers in this synopsis, is shaped by the characters' choices to trust each other fully rather than by a simple supernatural escape. A final letter written by Olivia to her family adds a poignant afterword to the tale, reinforcing the novel's focus on love that persists beyond fear.