Netflix has released a new official trailer for the medical noir K-drama Doctor X: Mafia in White, putting Kim Ji-won at the center of a hospital where skill collides with power. The clip frames her as a surgeon who walks into a system built on ego and patronage and treats every operating table like a battlefield. From the first seconds, the series signals that this is not a warm hospital romance but a colder fight over who gets to decide who lives.
The new trailer opens with a masked declaration that the operation will be hers, then cuts through crowded corridors, tense consultations, and blood-slick surgical lights. Staff argue over whether Gye Su-jeong (Kim Ji-won) is a savior or a threat, while she offers patients a brutal choice between dying soon or living far longer under her knife. The footage ends on her unblinking claim that she never misses, tying the hospital’s fear of her to the promise of a surgeon who refuses to lose.
A new teaser poster released alongside the trailer shows Kim Ji-won in a white coat streaked with blood, staring straight into the camera without flinching.
Lee Jung-eun plays Jang Hee-sook, the agency head who backs the incoming surgeon from the shadows, while Son Hyun-joo appears as Bu Seung-kwon, the hospital director trying to keep a failing institution alive. Kim Woo-seok plays intern Park Tae-gyeong, who is pulled into the hospital’s power struggle after the new surgeon arrives. The drama is directed by Lee Jung-rim and written by Pyeon Seong-geun, with production from Studio S, Studio Dragon, and HighZium Studio.
What is Doctor X: Mafia in White about?
Doctor X: Mafia in White is based on the hit Japanese series Doctor-X: Surgeon Michiko Daimon and is framed as a medical noir drama rather than a conventional hospital soap. It follows a surgeon who proves her worth only through results, walking into a teaching hospital where money, rank, and connections decide who gets the knife. Gye Su-jeong arrives through Jang Hee-sook’s physician-for-hire agency to fill a surgical vacancy and immediately clashes with a hierarchy that treats patients as pieces on a board.
Nicknamed the mad dog of the operating room, she takes cases other doctors avoid and uses each procedure to cut into the so-called white mafia that runs Gu Seo University Hospital. The story tracks her refusal to join rounds, papers, or politics, and the way that stance forces Bu Seung-kwon and the intern Park Tae-gyeong to confront what the hospital has become. Across twelve episodes, the series treats surgery as both craft and confrontation, asking what remains of medicine when white coats start behaving like a cartel.
Doctor X: Mafia in White premieres on October 9, 2026, on Netflix worldwide at the same time it begins on SBS TV in South Korea. New episodes will air every Friday and Saturday at 9:50 p.m. KST on SBS TV, giving the 12-episode run a twice-weekly cadence that matches its hospital-floor pace. Netflix will carry the series internationally from that same October 9 launch, so the first cuts of Gye Su-jeong’s war on the white mafia land on both broadcast and streaming at once.
Source: Netflix K-Content, Netflix Korea
