Lin Xin'er is a skilled con artist who survives by fabricating identities and deceiving other scammers. Living in an apartment with Ji Ting, a reclusive researcher who guards her private room, Lin Xin'er maintains a double life, posing as a wealthy socialite to execute elaborate frauds. Her latest target is Wang Wei, a man who preys on naive women. While preparing to close the scheme, Lin Xin'er becomes enraged after reading the rushed ending of a romance novel titled All Splendor Fades. A blinding light transports her into the book, where she awakens as Yin Yin, the novel's villainous eldest miss.
Yin Yin is the daughter of Yin Dongjiang, a powerful man in the Jianghu. The original Yin Yin was known for her cruelty toward Du Qianqian, a servant girl who is secretly the missing princess of Prince Luo. The male protagonist, Ling Long, leads the Zhuwang intelligence network and has infiltrated Yin Manor under the alias Lin Yuqi to investigate Du Qianqian's true identity. Upon transmigrating, Lin Xin'er quickly realizes her precarious position as a cannon fodder character destined for ruin. She decides to abandon the original plot and avoid conflict with Du Qianqian.
Her new reality proves complicated when Du Qianqian reveals she has also been reborn. The female protagonist, armed with memories of her past life, seeks revenge against Yin Yin for past abuses. However, the timeline has shifted due to Lin Xin'er's presence. When Du Qianqian attempts to frame Yin Yin for a stabbing incident, Yin Yin exposes the fake dagger, humiliating her rival. Ling Long, observing these events, becomes increasingly suspicious of Yin Yin's sudden change in behavior and her knowledge of future events.
Yin Yin's past as a con artist proves useful in this new world. She encounters a swindler named Fang Li who has deceived a kitchen maid named Liu'er. Determined to reclaim the stolen money, Yin Yin recruits a fake Daoist priest and a maid named Sang Mei to execute a counter-scheme. She successfully tricks Fang Li into believing he has secured a wealthy marriage, only to expose his fraud at the altar. This display of cunning catches Ling Long's attention. He confronts Yin Yin, revealing his true identity as the head of Zhuwang and offering her a deal: he will provide information in exchange for her assistance in finding Jia Renyi, the man who kidnapped the princess years ago.
Yin Yin accepts the partnership, recognizing that Ling Long's intelligence network could be vital for her survival. As they prepare to leave Yin Manor together, Yin Yin experiences a sudden flash of déjà vu triggered by a painting of red plum blossoms in snow. The image connects to a fragmented memory from her previous life involving Ji Ting and a spilled bottle of ketchup on a white coat. This realization suggests a deeper, hidden link between her modern life and the world she now inhabits. Meanwhile, Du Qianqian watches Ling Long's growing interest in Yin Yin with jealousy, setting the stage for further conflict as the three characters navigate a web of secrets, revenge, and hidden identities.
