The Trauma Code: Heroes on Call
Promotional poster
Hangul	중증외상센터
Hanja	重症外傷센터
Lit.	Severe Trauma Center
RR	Jungjeung oesang senteo
MR	Chungjŭng oesang sent'ŏ
Genre	Medical Comedy
Based on	Trauma Center: Golden Hour by Hansanleega      Hongbichira
Written by	Choi Tae-kang
Directed by	Lee Do-yoon
Starring	Ju Ji-hoon Choo Young-woo Ha Young Yoon Kyung-ho Jung Jae-kwang
Music by	Primary[1]
Country of origin	South Korea
Original language	Korean
No. of episodes	8
Production
Executive producers	Kwon Mi-kyung[1] Park Mae-hee[1] Jeon Pil-do[1]
Producer	Jo Soo-jin[1]
Cinematography	Choi Sang-mook[1]
Editor	Park Min-sun[1]
Running time	47–55 minutes
Production companies	Studio N Mays Entertainment
Original release
Network	Netflix
Release	January 24, 2025 (2025-01-24)

The Trauma Code: Heroes on Call (Korean: 중증외상센터) is a 2025 South Koreanmedicalcomedy television series written by Choi Tae-kang, directed by Lee Do-yoon, and starringJu Ji-hoon,Choo Young-woo,Ha Young,Yoon Kyung-ho andJung Jae-kwang. It is based on theweb novelTrauma Center: Golden Hour by Hansanleega and Hongbichira, which was serialized into aNaver Webtoon in 2019. The series follows the journey of Baek Kang-hyuk, a brilliant trauma surgeon who joins a struggling university hospital. It was released onNetflix on January 24, 2025.

Baek Kang-hyuk arrives at a university hospital where the trauma team is struggling to keep up. His arrival shakes things up as he possesses exceptional surgical skills honed through experience in conflict zones worldwide. His unorthodox methods and unshakable confidence initially create friction with the established team. Little by little, he earns their respect and guides them in developing into a leading trauma unit.

• Ju Ji-hoon as Baek Kang-hyuk^[2]

A geniustrauma surgeon and ex-mercenary combat medic who becomes the director of the Trauma Unit that became a Trauma Center at Hankuk National University Hospital.

• Choo Young-woo as Yang Jae-won^[2]

Afellow who becomes Kang-hyuk's first disciple. He is smart and pacifist who cannot lie. He is also a top scholar student for whole semester in medical school and the only son of a third-generation doctor family.

• Ha Young as Cheon Jang-mi^[2]

A nurse with five years of experience in the Trauma Unit at Hankuk National University Hospital.

• Yoon Kyung-ho as Han Yu-rim^[2]

Aproctologist and the head ofgeneral surgery andcolorectal surgery who watches Kang-hyuk closely after losing hisprotégé, Jae-won.

• Jung Jae-kwang as Park Gyeong-won^[2]

Aresident who takes on difficult surgeries in theanesthesiology department right before his specialist exam.

• Kim Eui-sung as Choi Jo-eun^[3]

Director of Hankuk National University Hospital.

• Kim Won-hae as Hong Jae-hun^[4]

Director of Planning and Coordination of Hankuk National University Hospital.

• Kim Sun-young as Kang Myeong-hui^[4]

Minister ofMinistry of Health and Welfare.

• Park Ye-ni [ko] as Agnes Song^[1]
• Hong Woo-jin [ko] as An Jung-heon^[1]

Team leader of 119 Air Rescue Unit.

• Min Young [ko] as Ma Tae-rim^[1]
• Jang Sung-yoon [ko] as Nurse Kim^[5]
• Park Jung-yoon as Han Ji-young^{[6][unreliable source?]}

Han Yu-rim's daughter.

• Kim Youn-jeong as Nurse Hong^[1]
• Kim Chung-gil [ko] as Hwang Seon-u^[1]

Ananesthesiologist.

• Lee Jung-in as Joo Hyung-wook^[7]

A fellow at Hepatobiliary and Pancreatic Department who has been with Jae-won since their resident years.

• Jo Jae-young as an emergency medical resident^[1]
• Oh Jung-woo as an emergency medical intern^[1]
• Bang You-in as Nurse Bang^[1]
• Park Gwan-woo as an emergency room nurse 1^[1]
• Jang Yoo-jung as an emergency room nurse 2^[1]
• Kwon Hye-min as an emergency room nurse 3^[1]
• Jo Hoon as a helicopter crew^[1]
• Lee Geun-hoo [ko] as a helicopter pilot^[1]
• Kim Seo-joon as a helicopter co-pilot^[1]

• Kim Jae-won as Seo Dong-ju^[1]

Amilitary doctor.

In 2022, Lee Nak-jun, also known by his pen name Hansanleega, anotolaryngologist,YouTuber andweb novel writer, appeared as a guest on the February 7 episode ofKBS Cool FM'sPark Myung-soo's Radio Show. He stated that they already signed a contract for the drama rights of his web novelTrauma Center: Golden Hour and thought ofGong Yoo andKim Nam-gil to star in the series.^[8] According to aSPOTV News report on September 15, the web novel has recently been decided to be made into a drama and was developed under theworking titleSevere Trauma Center: Golden Hour (중증외상센터: 골든 아워;Jungjeungoesangsenteo: goldeun awo).^[9] The series is written by Choi Tae-kang, directed by Lee Do-yoon, and produced byStudio N and Mays Entertainment.^[10]In September 2025,Netflix renewed the series for a second and third season.^[11]

In September 2022,Ju Ji-hoon was considered to be the lead actor of the series.^[9] In January 2023, Ju's agency Blitzway Studios confirmed that they received the offer and are reviewing it.^[12] In April 2023,Choo Young-woo has been cast^[13] and his agency, J,Wide-Company stated that he considered to appear.^[14] The cast lineup namely Ju, Choo,Yoon Kyung-ho,Ha Young, andJung Jae-kwang were revealed in June 2023.^[15]

According toIze report on December 20, 2024,The Trauma Code: Heroes on Call would schedule to be released on January 24, 2025,^[16] but on December 23, Netflix Korea posted a list of titles scheduled to be released in January 2025 on their official social media accounts and the series was listed under coming soon.^[17] Two weeks later,Netflix officially confirmed the release date.^[18]

The word-of-mouth success ofThe Trauma Code: Heroes on Call is reflected in its numbers. From January 27 to February 2, the show recorded 11.9 million views (calculated by dividing total watch hours by the runtime), reaching the first place ofNetflix's global non-English TV rankings just 10 days after its release. The series topped the charts in 17 countries, including Korea, Thailand, Taiwan, Malaysia, Chile and Peru, and entered the Top 10 in 63 countries, including New Zealand, France, Italy, Mexico, Brazil, India, Japan and Egypt. According toGood Data Corporation, a Korean content analytics firm, the show's buzz surged by 140 percent compared to the previous week, making it 2.5 times more talked about thanSquid Gameseason 2.^[19]

Pierce Conran ofSouth China Morning Post rated the series four out of five and praisedJu Ji-hoon's acting, "central to the show's success is Ju, who has seldom been better as the picture-perfect Baek Kang-hyuk, an enormously attractive role that complements his strong points." He added that "The Trauma Code: Heroes on Call is a show that takes the medical action drama formula honed by shows likeDr. Romantic and both pares it down and amps it up. The characters are simpler, as is the drama, with the focus squarely on scratching viewers' itch for heroic highs."^[20]

• The Trauma Code: Heroes on Call onNetflix
• The Trauma Code: Heroes on Call atIMDb 
• The Trauma Code: Heroes on Call atHanCinema

• 2025 South Korean television series debuts
• Korean-language television shows
• Netflix television dramas
• South Korean comedy television series
• South Korean medical television series
• South Korean pre-produced television series
• Television series by Studio N (Naver)
• Television shows based on South Korean web novels

• CS1 uses Korean-language script (ko)
• CS1 Korean-language sources (ko)
• Articles with short description
• Short description is different from Wikidata
• Use mdy dates from December 2024
• Articles containing Korean-language text
• All articles lacking reliable references
• Articles lacking reliable references from May 2025
• Pages containing links to subscription-only content