Lu Xiaoxiao transmigrates into a wealthy family novel she was reading, expecting to become the beloved female lead. Instead, a system informs her she has become the villainous fake heiress destined for a tragic end. She cannot return home until she completes the story, and death in this world means permanent death. Upon waking, she is immediately confronted by her adopted younger brother, Lu Yubai, who demands she vacate her room for the returning true daughter, Lu Jiaoyue. Lu Xiaoxiao initially reacts with anger but quickly suppresses it to maintain her green tea persona, though her inner thoughts are loud and sarcastic. Unbeknownst to her, Lu Yubai discovers he can hear her inner monologue, shocking him with her true hostile feelings despite her outward submission.
At the welcome dinner, Lu Xiaoxiao’s inner voice reveals her genuine affection for the sweet and naive Lu Jiaoyue, confusing the family. While Lu Yubai interprets this as manipulation, the parents feel relieved. When Lu Yubai insults Lu Xiaoxiao’s adopted status, she tears up and pleads to return to being an orphan, which inadvertently exposes the family’s neglect. Her father, Lu Yuan, feels guilty and allows her to keep her room while ordering her to take Lu Jiaoyue shopping. During the outing, Lu Xiaoxiao encounters Yue Mengqian, a superficial friend of the original host, who insults Lu Jiaoyue. Lu Xiaoxiao defends her sister by exposing Yue Mengqian’s plastic surgery flaws, driving her away. She then forces Lu Jiaoyue to spend heavily, secretly enjoying the luxury.
The system tasks Lu Xiaoxiao with facilitating a meeting between Lu Jiaoyue and the male lead, Gu Sipei, while avoiding becoming a third wheel. Lu Xiaoxiao hides and spies as Lu Jiaoyue accidentally bumps into Gu Sipei. Lu Jiaoyue, unaware of his status, offers him twenty yuan as compensation for the inconvenience, which amuses Gu Sipei and sparks his interest. Meanwhile, Lu Xiaoxiao is terrified by Lu Yubai’s pet dog, Lightning. She manipulates the situation to make Lu Yubai apologize and later uses system points to scare him with a snake in his bed, establishing a rivalry.
As the Lu Family prepares for a recognition banquet for Lu Jiaoyue, the system assigns Lu Xiaoxiao to ruin the event. She plans to cause a blackout by tampering with the power supply. While sneaking through the hotel, she overhears Ji Yunhuai, the second male lead and a playboy, arguing with a woman. Ji Yunhuai catches Lu Xiaoxiao eavesdropping and forces her to guide him to the banquet hall. Lu Xiaoxiao lies about being a toilet cleaner to avoid him, but he insists she lead the way, threatening to dock her pay. She realizes she has missed the opportunity to sabotage the power and must now navigate her way through the event while dealing with Ji Yunhuai’s persistent presence.
