In episode 3 of TV CHOSUN's weekend mini-series "Doctor Shin," which aired on the 21st, the story depicted Hyun Ran-hee, who entered Momo's body after a brain change surgery, facing a precarious situation. The broadcast mainly focused on the conflicts and confusion Hyun Ran-hee experienced after taking over Momo's body.

Awakening in the recovery room, Momo asked Shin Ju-shin, "Tell me. Your name?" and requested a mirror. Then, Hyun Ran-hee looked into the mirror reflecting her own image and said, "As long as it succeeded, that's enough. You did well," extending her hand. However, Shin Ju-shin became confused and teary-eyed seeing Momo speak in Hyun Ran-hee's tone. Meanwhile, Hyun Ran-hee, whose brain had been switched into Momo's body, had regained consciousness but suffered from a slurred speech and difficulty walking.

After returning to Korea, Shin Ju-shin visited Momo's house and was bewildered to see Momo still speaking in Hyun Ran-hee's manner. Momo told Shin Ju-shin, "Don't think about this or that. I'll handle everything without any problems," adding, "It's confusing, right? When I look in the mirror, I don't know if I am Momo or if I am looking at Momo." Shin Ju-shin struggled with his feelings, recalling the time he loved Momo.

Meanwhile, Geum Ba-ra, worried about Momo's condition, discovered during her investigation that Ha Yong-jung had special feelings for Momo. While drinking alone with Ha Yong-jung, Geum Ba-ra heard Ha Yong-jung say that if Shin Ju-shin gave up on Momo, he would take responsibility, which upset her and made her abruptly leave.

Momo (with Hyun Ran-hee's brain) swallowed tears watching Hyun Ran-hee (with Momo's brain) unable to even eat ice cream properly, then bathed her cleanly, dressed her in a thin slip, and laid her on the bed. Later, Momo (with Hyun Ran-hee's brain) watched Hyun Ran-hee (with Momo's brain) grow paler due to hypothermia and left a final farewell, saying, "Hyun Ran-hee, you lived hard. Is this karma? Even if it is, I can't help it."

Momo (with Hyun Ran-hee's brain) wrote a will and sent a text to Paul Kim saying, "If you find me... tell them Mom was very sorry... Make sure you find me." During this process, a flashback showed Paul Kim's face stiffening as soon as he saw Hyun Ran-hee, saying, "You haven't changed at all."

While Shin Ju-shin was in a meeting with doctors, he received a call from Momo. Momo (with Hyun Ran-hee's brain) urgently said, "Please come quickly. My mother is—" At the same time, Geum Ba-ra reported, "It seems Momo's mother has taken extreme measures," broadcasting breaking news: "Hyun Ran-hee, current gallery director, found dead at home; Momo called 119." Upon hearing this news, Ha Yong-jun appeared shocked.

Episode 4 of "Doctor Shin" is scheduled to air on the 22nd at 10:30 PM. This episode is expected to continue the story of a ruthless maternal love that betrays familial bonds for desire and tangled affections leading to catastrophe. Ha Yong-jung reveals inappropriate feelings toward Shin Ju-shin's fiancée Momo, and James openly shows interest in Geum Ba-ra, further complicating the relationships among the surrounding characters.

This episode left a strong impression on viewers by posing profound questions about family, love, and human nature. After the broadcast, viewers expressed various reactions to the characters' choices and their consequences. "Doctor Shin" will continue to offer intriguing stories through these complex relationships and conflicts.