In the 15th episode, Geum Bara, driven by revenge, approaches Shin Ju-shin (played by Jung Yi-chan) to agree to a brain swap surgery with Mo Mo (played by Baek Seo-ra, originally Cheon Young-min's brain). The character, who had been living in Mo Mo's body with Kim Jin-joo's brain, pleads for another surgery after her relationship with Ha Yong-jung deteriorates. Mo Mo persuades Geum Bara that exchanging bodies would allow Ha Yong-jung and Geum Bara to be together, while she could stay by Shin Ju-shin's side, presenting it as a win-win situation.
Swayed by this temptation, Geum Bara chooses a path of revenge against Mo Mo instead of a bright future with Ha Yong-jung. However, after the surgery, Kim Jin-joo's brain in Geum Bara's body fails to regain consciousness, resulting in her death, leaving viewers in shock.
Unaware of this tragedy, Ha Yong-jung prepares to part ways with Mo Mo and sends a heartfelt message of repentance to Geum Bara. He regrets his past infatuation with actress Mo Mo, blinded by vanity, and confesses that he now understands the true meaning of love. Ha Yong-jung promises to cherish Geum Bara's child as his own and vows to spend a lifetime together, unaware that Mo Mo now possesses Geum Bara's brain. The protagonist, awakened in Mo Mo's body with Geum Bara's brain, silently watches Ha Yong-jung mourn over Geum Bara's dying body, choosing not to reveal her true identity and swallowing her tears in silence.
Meanwhile, Kim Kwang-chul (played by Cha Kwang-soo), blinded by greed, exploits the horrific situation of his daughter's body swap to heighten the drama's tension. Lurking in the parking lot, Kim Kwang-chul threatens Mo Mo with a weapon, only to discover she is his biological daughter, Kim Jin-joo. After confirming with surgery scars and passwords, he demands a large sum of money, exceeding daily transfer limits, and even extorts the penthouse password from Shin Ju-shin. Kim Kwang-chul's chilling desire to transfer his consciousness into his son-in-law Ha Yong-jung's robust body using Shin Ju-shin's medical skills sends shivers down viewers' spines.
Reporter: Chae-ryeong Lim, Ten Asia syjj426@tenasia.co.kr