Lin Shuyun, a veteran commander from the apocalypse, wakes up in the body of a young woman in 1960s Yun City after sacrificing herself to defeat a zombie king. She finds herself in the home of the wealthy Lin family, where she has been falsely accused of pushing her step-sister, Su Xiaonian, into a freezing rice field. The original host was a timid, weak-willed girl who was manipulated by her father, Lin Youwen, and his mistress, Su Xiuhong, into accepting abuse and eventually meeting a tragic end. Upon absorbing the original memories, Lin Shuyun realizes she has transmigrated into a novel where she was destined to be a villainous supporting character, slandered and sent to labor reform.
Lin Shuyun immediately shifts the dynamic, refusing to apologize and instead exposing the truth: Su Xiaonian secretly met with her fiancé, He Junze, and framed Lin Shuyun to cover her tracks. She demands repayment for five years of board and lodging, calculating a debt of one hundred thousand yuan. When Lin Youwen attempts to strike her, Lin Shuyun effortlessly repels him with combat skills honed in the apocalypse. She further asserts her dominance by demanding his gold watch and jade pendant as compensation, threatening to expose his affair and illegitimate daughter if he refuses. The household staff, previously alienated by the original host, begin to shift their loyalty back to her.
A system named 007 binds to Lin Shuyun, revealing that her soul was recruited by the Time-Space Bureau to inhabit this body. Her tasks are to exact revenge on those who wronged the original host and to repay a debt of gratitude to Gu Yichuan, a disabled military officer who saved the original Lin Shuyun in her past life. In return, the system promises to unlock her spatial ability, which contains a vast storage area and spiritual fields capable of healing. Lin Shuyun agrees, motivated by the desire to live a peaceful life and protect her new assets.
The conflict escalates when Su Xiuhong and Su Xiaonian attempt to steal back their jewelry, but Lin Shuyun has already replaced it with boxes laced with itching powder. Meanwhile, He Junze, who has been secretly involved with Su Xiaonian for two years, attempts to break off his engagement with Lin Shuyun to marry her. However, when the Lin family arrives at the He estate, Lin Shuyun’s transformed appearance and sharp demeanor stun everyone. He Junze, realizing he still desires her, tries to backtrack, but Lin Shuyun demands compensation for his infidelity. Her younger cousin, He Junshan, provides photographic evidence of He Junze and Su Xiaonian’s affair, forcing He Junze to publicly apologize and agree to pay one hundred thousand yuan to avoid scandal. Lin Shuyun secures the money and the cancellation of the engagement, setting the stage for her next move: seeking out Gu Yichuan to fulfill her gratitude task while dismantling the Lin family’s corrupt structure.
