Some characters announce themselves with a handshake. Gye Soo Jung does it by questioning a surgeon’s decision in front of the entire medical staff. Doctor X has put Kim Ji Won’s fearless surgeon on screen, and her first day at Guseo University Hospital sets the tone for the whole drama.
Doctor X First-Day Moment: Overview
| Detail | Info |
|---|---|
| Drama | Doctor X (SBS) |
| Genre | Medical noir |
| Premiere | October 9, 9:50 p.m. KST |
| Lead | Kim Ji Won as Gye Soo Jung |
| Hospital director | Son Hyun Joo as Boo Seung Kwon |
| Staffing agency head | Lee Jung Eun as Jang Hee Sook |
| Surgical intern | Kim Woo Seok as Park Tae Kyung |
How Does Gye Soo Jung Make Her Entrance?
According to SBS’s first-episode preview, Gye Soo Jung stays bold and fearless inside the hospital, standing in the auditorium where the staff has gathered and asking pointedly why a laparotomy is being performed on a patient. It’s a daring move for a newcomer, and it shows she isn’t there to follow hospital politics. She also defiantly tells someone that she won’t go along with what’s being asked of her, which fits her reputation as a rule-ignoring maverick.

The Man She Is Up Against
Son Hyun Joo plays Boo Seung Kwon, the hospital director. He has compromised with a corruption-ridden organisation to save the failing hospital, yet still harbours a dream of upholding his duty as a doctor. That makes him more than a simple villain: he’s a man caught between survival and conscience. In the preview he dismisses a problem coldly, calling it a tail that can simply be cut, which hints at how ruthless the system around him can be.
The Mysterious “X”
One of the show’s smartest hooks is the name itself. In the preview, intern Park Tae Kyung meets Gye Soo Jung outside the hospital and asks for her name, and she answers by making a large “X” with her finger. Earlier teasers also have the director quietly wondering whether she is the legendary “Doctor X,” so her true identity is clearly a mystery the drama intends to unravel.

Who Sent Her There?
Lee Jung Eun’s Jang Hee Sook heads the medical staffing agency that places Gye Soo Jung at the hospital. She calls her the top ace of the agency. Her sharp, watchful presence suggests she has plans of her own, which should add another layer of scheming to the story.
Why It Works for Fans of Justice Dramas?
Doctor X follows the satisfying SBS formula: a protagonist who takes on corruption and punishes evil. If you enjoy a hero who stands up to powerful people, and a medical setting with high-stakes surgeries, this is a natural pick. Learn more about the genre on Wikipedia’s medical drama page. soompi
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A new doctor, a corrupt hospital and a director with a conscience make for an explosive first day. If the previews are any guide, Gye Soo Jung isn’t going to be quiet for long.
FAQs
Who plays the hospital director in Doctor X?
Son Hyun Joo plays Boo Seung Kwon, the director of Guseo University Hospital.
When does Doctor X air?
It premiered October 9 at 9:50 p.m. KST on SBS.





