After finding out that Srikanda's mother-in-law, Madame Nuan, played a part in her sister's death, Pawinee declares herself enemies with Madame Nuan. Noppanai, Pawinee's brother-in-law, doesn't realize his mother's wickedness and failed to protect Srikanda. Pawinee decides to marry Noppanai for revenge, presenting herself as Madame Nuan's new daughter-in-law. Madame Nuan almost doesn't believe her own ears, but there's nothing she can do besides proving to Pawinee that it's not easy to survive as her daughter-in-law.

Singkorn insists on matchmaking his daughter, Lalita, with Noppanai. Pawinee's marriage certificate is in the way, so it is up to Madame Nuan and Nadedao to make their new unwanted in-law's life as difficult as possible. If she is unable to endure the torments, then she can file for divorce for all they care. Pawinee is able to retaliate using her "an eye for an eye" tactics, leaving her adversaries flabbergasted many times. However, she later realizes that the war against her devil of a mother-in-law at home is in no way comparable to the latter's influence in society, which is capable of causing her to fail a job interview in the blink of an eye.

Noppanai quits his job to restore peace between his mother and wife as they are always ready to jump at each other's throats, especially with Nadedao's provocation. When Madame Nuan hears about Noppanai leaving his job, she uses her connections to land him a new job even though he makes it clear that he doesn't need her help. Pawinee sees it as a chance to reveal Madame Nuan's true nature. Pawinee later competes against Noppanai to steal his new job at Singkorn's company, driving Madame Nuan extremely anxious.

Noppanai asks to divorce Pawinee as well as threatens to tell Pinit about her past to change the game and propose a new plan to her. The plan involves both of them pretending to love each other to prove to Madame Nuan and everyone else that their relationship is genuine. Pawinee has no choice, so she agrees to go along with it. The two start to fall for each other due to the close proximity, although they attempt to stop themselves. Panit is worried that Pawinee might develop feelings for her brother-in-law, so he tells Thomtawee the secret behind her marriage, including her lifelong crush on him. He encourages Thomtawee to pick up his pace and make a move on his daughter.

Resenting Pawinee for trying to expose her, Madame Nuan sends someone to burn down Panit's house. Pawinee invites her father to live with her as a way to get back at Madame Nuan. Panit's unexpected arrival ends up ruining Madame Nuan's fancy party. Noppanai warns Pawinee to watch out for his mother and tries to convince both Madame Nuan and Pawinee to live in harmony, even though deep down he knows it's easier said than done.