Rong Jiqiao, a former nurse from a small county town, dies by drowning at the hands of a wealthy heiress's admirer after being abandoned by her lover, Duan Yan. She had deceived him into believing she saved his life and paid his medical bills, only to discover later that he was actually the long-lost heir to Beijing's elite Duan family, who married the woman who truly saved him. Cast aside and unable to survive on her own, Rong Jiqiao was hunted down and killed. Upon opening her eyes, she finds herself reborn in the past, back in the cramped shared apartment she and Duan Yan rented when he was still a struggling construction worker and security guard.
In this second chance, Rong Jiqiao is determined to change her fate. She realizes that her vanity and greed led to her destruction, so she resolves to be a considerate partner and secure enough money to leave Beijing before Duan Yan's true identity is revealed. She immediately takes action, selling her collection of counterfeit luxury goods to pay off overdue rent and finding a job as a patient guide at a clinic. Her behavior shifts dramatically; she cooks for Duan Yan, keeps their home clean, and tries to share his financial burden. Duan Yan, who had grown accustomed to her selfishness, is initially suspicious of her sudden change but is also visibly moved by her efforts. He promotes his job, buys her gifts, and expresses a desire to support her fully, unaware that her kindness is calculated survival.
However, Rong Jiqiao's past life habits leave her unprepared for the realities of the workforce. At the clinic, she faces hostility from a coworker, Zhu Xiaoyue, who tries to shift blame for a mistake onto her. Rong Jiqiao handles the situation by reviewing surveillance footage, exposing the truth and saving her job. Outside of work, she encounters harassment from a neighbor, Li Jian, who attempts to intimidate her into a relationship. She manages to deter him by calling the police, an incident that highlights her vulnerability in the big city.
Despite her efforts to play the perfect girlfriend, Rong Jiqiao remains haunted by the trauma of her previous death. She lives in constant fear that Duan Yan will discover her lies about saving him. She plans to accumulate savings over the next six months until his family finds him, at which point she intends to return to her hometown. Meanwhile, Duan Yan begins to notice inconsistencies in her behavior, particularly her sudden frugality and her refusal to accept expensive gifts. He questions her motives, suspecting she might be planning to leave him for someone wealthier. The narrative tension builds as Rong Jiqiao navigates her new job, deals with local harassers, and tries to maintain a facade of devotion while hiding the truth that she is a reborn woman with a dark secret. Her survival depends on keeping Duan Yan happy and ignorant of her past deception until she can escape the relationship on her own terms.
