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.
as Cha Yo-Han
as Kang Shi-Young
as Kim Won Hee
as Son Seok-Ki
as Tae-Kyung
as Chae Eun-Jung
as Kang Yi-Soo
as Kang Yi-Moon
as Min Joo-Kyung
as Jung-Nam
as Lee Yoo-jun
as Kang Mi-Rae
as Lee Da-hae
as Heo Joon
as Hong Yun Jin
as Na Kyung Ah
as Han Myung Oh
as Kwon Suk
as Lee Won Gil
as Yoo Joon's mother
as Nurse
as Questioner
as Flight attendant
as Kim Jung Ho [3rd-year Resident Ophthalmology]
as Professor of Anesthesiology and Pain Medicine
as Lee Ki Suk (A CIPA patient)
as Shim Joon Chul
as Lee Ki Suk's mother
as Cha Yo Han's father
as Cha Yo Han (child)
as Inmate
