Dr. Lucifer - Episode 4

Jung Yoon is distressed after Lee Tae Kang says he wants to break up and even avoid eating together. Someone offers Jung Yoon a mysterious remedy, insisting she needs to care for her health now more than ever. Meanwhile, a man arrives to make a payment and is asked for his ID, which he struggles to update. Another scene introduces Dr. Kang Segjum, who completes a scar-free procedure successfully, but warns the patient that in order to fully benefit, they must keep a certain promise. The episode ends with this unresolved demand hanging over the patient’s future.