
A fallen star lawyer and a ruthless black sheep of wealth collide in a desperate dance of ambition and survival. With one craving a lifeline of cash and the other yearning for power, Evan strikes a deal with Alexis, offering hefty rewards in exchange for entangling her in the treacherous web of family rivalry and making her his business spy and clandestine lover. A deal struck, four tasks assigned: infiltrate, poison, seduce, and break Evan's brother's heart. Two souls, never meant to fall for each other, cross paths at the wrong time, with the wrong intentions. Amidst a labyrinth of wrongs and regrets, love and hate intertwine, leaving them to wonder if they can extinguish the flames of sin and vengeance.

To pay for her sister's exorbitant medical bills and investigate an arson case, top lawyer Zhai Shuangbai finds herself in dire straits. At this moment, the mysterious Nie Zhiyi appears, hiring her with millions to become a corporate spy. Her first mission is to infiltrate Nie Tian International and become the special assistant to its president, Nie Yusang. When her interview is blocked, Nie Zhiyi secretly causes chaos, making Nie Yusang "mess up" unexpectedly, creating a perfect opportunity for Zhai Shuangbai to leverage the latter's guilt and successfully secure the position.

In this episode, former top lawyer Zhai Shuangbai hides her identity and applies for a job as assistant to her enemy, Nie Yusang, to pay for her sister's treatment after a fire. During the interview, she successfully gains Nie Yusang's trust and secures the position by claiming her family died in the fire and her lawyer's license was revoked. However, this is all orchestrated by Nie Yusang's brother, Nie Zhiyi. Becoming an assistant is only the first task Zhai Shuangbai completes. To test her limits, Nie Zhiyi immediately orders her to jump into a swimming pool for a million-dollar reward. Zhai Shuangbai complies without hesitation, showcasing her determination to do anything for money.

After being rescued by her employer Nie Zhiyi following a drowning mission, Zhai Shuangbai is haunted by painful memories of her sister Zhai Yimei's severe injuries in a fire. Uncharacteristically, Nie Zhiyi kisses her after the mission and ambiguously asks her to be his "invisible girlfriend." However, the warmth is short-lived as Nie Zhiyi immediately assigns a cruel new task: ordering Zhai Shuangbai, a lawyer, to abort his half-brother Nie Yusang's child, plunging their relationship back into tension and uncertainty.

To secure his claim to the family inheritance, Nie Zhiyi hires and blackmails the protagonist, Zhai Shuangbai, ordering her to eliminate Hongdou, the pregnant fiancée of his half-brother Nie Yusang. At a company meeting, Nie Zhiyi is publicly humiliated by his elder brother, Nie Tianyi, who calls him a "bastard," intensifying the family conflict. When the pregnant Hongdou visits, Nie Tianyi again provokes Nie Zhiyi, hinting at his malicious intentions. Faced with Nie Zhiyi's ultimate threat – holding his sister's life hostage – Zhai Shuangbai is forced into the opulent family struggle, finding herself in a deep moral quandary.

This episode tells how the female lead, Zhai Shuangbai, is blackmailed by her employer, Nie Zhiyi, using her sister's life as leverage. She is ordered to drug Hongdou, Nie Yusang's fiancée, at Nie Yusang's engagement party. Zhai Shuangbai struggles internally but ultimately chooses to resist, deliberately smashing the tainted bird's nest soup. At the engagement party, as Nie Yusang announces the "good news" of Hongdou's pregnancy, Zhai Shuangbai has already arranged for Hongdou's other boyfriend, Zhou Kai, to storm the venue, turning a joyous banquet into a farce exposing scandal, marking the beginning of her counterattack.

At the engagement ceremony of Nie Yusang and Hongdou, Hongdou's ex-boyfriend Zhou Kai suddenly bursts in and publicly reveals the shocking secret that Hongdou is pregnant with his child. This sudden scandal causes the Nie family to lose face, and Nie Yusang's father, Father Nie, is furious, threatening to reclaim the important project Nie Yusang is in charge of. Zhai Shuangbai, a guest, witnesses all of this. Afterwards, Zhai Shuangbai is alone with another important figure in the Nie family, Nie Zhiyi, in a mansion. Facing Nie Zhiyi's aggressive questioning and provocation, a tense confrontation between the two begins to emerge.

The episode opens with Nie Zhiyi punishing and warning Zhai Shuangbai for unilaterally altering the plan and saving Zhou Kai's child, highlighting the tense and unequal employer-employee relationship between them. During the confrontation, Zhai Shuangbai painfully reveals her tragic past of a broken family due to a mistake in her legal career. After the mission, Zhai Shuangbai goes to find her former superior, Nie Yusang, only to discover him heavily intoxicated. In his drunken state, Nie Yusang mistakes Zhai Shuangbai for his ex-girlfriend "Hongdou" and emotionally pleads with her not to leave, setting the stage for the complex emotional entanglements among the three.

The episode opens with the female lead, Zhai Shuangbai, tending to a drunken Nie Yusang (Third Master). However, Nie Yusang mistakes her for his ex-girlfriend "Hongdou," revealing his vulnerability and longing. Zhai Shuangbai struggles internally, torn between caring for him and regretting her own predicament. Meanwhile, another storyline unfolds as Nie Zhiyi (Brother Yi) investigates a criminal named "Scarface" through his subordinates, uncovering his connection to a suspicious car accident. The episode concludes with Nie Zhiyi's monologue hinting that the seemingly harmless Nie Yusang is actually hiding a great deal, foreshadowing underlying tensions between the brothers and an impending conspiracy.

At a family dinner, Patriarch Nie of the Nie family announces a tempting offer: 10% of the company's shares will be awarded to whichever of his three sons—Nie Tianyi, Nie Zhiyi, or Nie Yusang—succeeds in wooing An Shuoshi, the daughter of the An family, to secure a business alliance. He sternly scolds his third son, Nie Yusang, for being consumed by his love life. At this moment, Nie Yusang's ex-girlfriend, Hongdou, suddenly bursts in, causing the situation to spiral out of control. Through a flashback from the heroine Zhai Shuangbai's memories, it is revealed that she and Nie Zhiyi had set a trap, and Hongdou was an unexpected variable in this plan. Under everyone's relentless questioning, Hongdou finally tremblingly points to the mastermind behind it all as "Second Young Master Nie."

At a Nie family gathering, a woman named Hongdou bursts in, tearfully accusing the second young master, Nie Zhiyi, of ordering an attack on her father, presenting a check bearing Nie Zhiyi's seal as evidence. In an emotional outburst, she further reveals she is pregnant with the third young master, Nie Yusang's child, but was forced to have an abortion. Just as the Nie patriarch is about to punish Nie Zhiyi in his rage, Nie Zhiyi calmly retorts, implying Hongdou was paid twice and has a mastermind behind her. However, the enraged patriarch remains unmoved, insisting on enforcing family law on Nie Zhiyi, thus commencing a conspiracy and frame-up within the wealthy family.