Cha Yo-Han—an arrogant but genius doctor of anesthesiology—and Kang Shi-Young—a smart, warm resident of anesthesiology—work together to help people with mysterious cases of acute or chronic pain.
Cha Yo-Han
Kang Shi-Young
Kim Won Hee
Son Seok-Ki
Tae-Kyung
Chae Eun-Jung
Kang Yi-Soo
Kang Yi-Moon
Min Joo-Kyung
Jung-Nam
Lee Yoo-jun
Kang Mi-Rae
Lee Da-hae
Heo Joon
Hong Yun Jin
Na Kyung Ah
Han Myung Oh
Kwon Suk
Lee Won Gil
Yoo Joon's mother
Nurse
Questioner
Flight attendant
Kim Jung Ho [3rd-year Resident Ophthalmology]
Professor of Anesthesiology and Pain Medicine
Lee Ki Suk (A CIPA patient)
Shim Joon Chul
Lee Ki Suk's mother
Cha Yo Han's father
Cha Yo Han (child)
Inmate
