Dr. Shin Ju Sebin's Brain Swap Surgery

In the 15th episode of TV CHOSUN's weekend mini-series 'Doctor Shin', Geum Bara (played by Ju Se-bin) asked Shin Ju-shin (played by Jung Yi-chan) for a 'brain swap surgery' to save her stepsister Mo Mo (played by Baek Seo-ra) from the wicked Kim Jin-ju (played by Cheon Young-min), and as a result, she woke up in Mo Mo's body. Meanwhile, Kim Jin-ju attempted the 'brain swap surgery' to escape the threats of her biological father Kim Kwang-cheol (played by Cha Kwang-soo), but a major twist unfolded when she ultimately failed to regain consciousness. The 15th episode, aired on this day, recorded a peak viewership rating of 2% per minute.

Shin Ju-shin asked Geum Bara, who had reappeared after disappearing, about her pregnancy and marriage, but Geum Bara denied it. Geum Bara then requested the 'brain swap surgery' from Shin Ju-shin, saying, "The surgery you mentioned before. I'll do it." Shin Ju-shin worried about Mo Mo's consent, but Geum Bara showed a firm attitude, stating she would take responsibility.

Ha Yong-joong (played by Ahn Woo-yeon) revealed his affection for Geum Bara as soon as he saw her, but Geum Bara maintained a cold demeanor. Ha Yong-joong confessed that he had decided to divorce Mo Mo (with Kim Jin-ju's brain) and asked for forgiveness. Later, Geum Bara asked Ha Yong-joong, "Can you accept my child too?" Ha Yong-joong expressed his unwavering feelings for Geum Bara by stating there would be no problem. Geum Bara left Ha Yong-joong with a meaningful remark, saying, "​I don't regret liking you."

Mo Mo, with Kim Jin-ju's brain, rushed to Shin Ju-shin upon hearing Ha Yong-joong's divorce declaration and Geum Bara's appearance, proposing a 'brain swap surgery' with Geum Bara, saying, "I'll become Mo Mo, marry Yong-joong oppa, and you become Bara and live with the director forever." When told to get Shin Ju-shin's permission, Mo Mo confided in Geum Bara about her discord with Ha Yong-joong and persuaded her, saying, "Think about marrying Yong-joong oppa as Mo Mo. I'll become you and marry the director..."

Later, it was revealed that the reason Mo Mo (with Kim Jin-ju's brain) proposed the 'brain swap surgery' was due to threats from her biological father, Kim Kwang-cheol (played by Cha Kwang-soo). When Kim Kwang-cheol threatened her with a knife, Mo Mo revealed the truth about the brain swap surgery, saying, "It's me, Jin-ju! Only my body is Mo Mo!" Kim Kwang-cheol, feeling betrayed by the news that Kim Jin-ju's body was gone, demanded hundreds of millions of won, terrifying Mo Mo.