The story follows Lisette Ashburton, a young woman with memories of multiple past lives, each ending tragically on her 20th birthday. In her current, fourth life, she was born into nobility but narrowly escaped death at the hands of her stepmother and stepsister, who feared her influence over a prince. To survive and avoid her recurring fate, Lisette decides to flee her noble home and live a secluded life in a rural area called the Sanctuary, known for its lack of monsters.
On her way to the Sanctuary, Lisette encounters a pair of impoverished orphans. Recognizing the younger sister's illness as one that claimed her own sister in a past life, Lisette, driven by empathy and a desire to prevent another tragedy, gives the siblings her valuable jewelry and shoes for medicine. She entrusts her loyal maid, Lialla, to accompany them and ensure they receive proper care, while Lisette continues her journey alone. The older brother, a sharp-eyed boy, vows to repay her kindness someday.
Lisette's past lives have been a cycle of death, always at the hands of the same monster on her 20th birthday. This time, she aims to reach her 20th birthday in the Sanctuary, hoping to break the curse. After escaping her family and Lialla, she successfully reaches the Sanctuary. She endures a year of unexplained illness but recovers, then dedicates herself to farming, drawing on her past life knowledge. Seven years pass, and Lisette, now 19, visits the capital for the wedding of her former noble acquaintance, Casey. She borrows Casey's attire and is accompanied by Martin, a childhood friend. While at the wedding, Lisette encounters a strikingly beautiful man named Ralph. He claims to have been searching for her and expresses a deep, almost obsessive, devotion, stating she saved his life and his sister's in the past. He reveals that she gave him and his sister money and shoes when they were orphans and his sister was gravely ill. He has since been adopted into a noble family.
The next day, Ralph appears at Lisette's humble dwelling in the Sanctuary, offering to help with farm work as a form of repayment. He is incredibly skilled and dedicated, much to Lisette's bewilderment and slight unease. He insists on calling her "Lisette-sama" and expresses a desire to live there with her. He reveals he is the adopted son of a Marquis and, more astonishingly, the kingdom's hero, having defeated a demon lord. He confesses his obsessive search for her over the past eight years, during which he learned of her planned entry into a convent and her current life in the Sanctuary.
Lisette, overwhelmed by his persistence and the revelation of his true identity, is further shaken when she learns the Sanctuary's protective magic is weakening, making it unsafe. Ralph, seeing her distress, offers his unwavering support and protection, proposing they live together in the capital. He reveals he has prepared a room for her in his mansion, anticipating her eventual arrival. Lisette, realizing the danger in the Sanctuary and the potential of Ralph's power, agrees to his proposal, albeit with apprehension. She discovers that Ralph has meticulously collected and displayed all the accessories she gave him years ago, along with numerous portraits of her from childhood, revealing the depth of his obsession. The chapters end with Lisette questioning her decision, realizing Ralph's devotion might be more than she can handle.
