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.
Ji Sung
Cha Yo-Han
Lee Se-young
Kang Shi-Young
Oh Hyun-joong
Kim Won Hee
Lee Kyoo-hyung
Son Seok-Ki
Kim Hye-eun
Tae-Kyung
Shin Dong-mi
Chae Eun-Jung
Jeon No-min
Kang Yi-Soo
Uhm Hyo-seop
Kang Yi-Moon
Oh Seung-hyun
Min Joo-Kyung
Jung In-gi
Jung-Nam
Hwang Hee
Lee Yoo-jun
Jung Min-ah
Kang Mi-Rae
Cheon Young-min
Lee Da-hae
Kwon Hwa-woon
Heo Joon
Son San
Hong Yun Jin
Lee You-mi
Na Kyung Ah
Kim Yeong-hun
Han Myung Oh
Jeong Jae-seong
Kwon Suk
Yun Ju-sang
Lee Won Gil
Jung Kyung-soon
Yoo Joon's mother
Ji Sung
Cha Yo-Han
Lee Se-young
Kang Shi-Young
Oh Hyun-joong
Kim Won Hee
Lee Kyoo-hyung
Son Seok-Ki
Kim Hye-eun
Tae-Kyung
Shin Dong-mi
Chae Eun-Jung
Jeon No-min
Kang Yi-Soo
Uhm Hyo-seop
Kang Yi-Moon
Oh Seung-hyun
Min Joo-Kyung
Jung In-gi
Jung-Nam
Hwang Hee
Lee Yoo-jun
Jung Min-ah
Kang Mi-Rae
Cheon Young-min
Lee Da-hae
Kwon Hwa-woon
Heo Joon
Son San
Hong Yun Jin
Lee You-mi
Na Kyung Ah
Kim Yeong-hun
Han Myung Oh
Jeong Jae-seong
Kwon Suk
Yun Ju-sang
Lee Won Gil
Jung Kyung-soon
Yoo Joon's mother
Ji Sung
Cha Yo-Han
Lee Se-young
Kang Shi-Young
Oh Hyun-joong
Kim Won Hee
Lee Kyoo-hyung
Son Seok-Ki
Kim Hye-eun
Tae-Kyung
Shin Dong-mi
Chae Eun-Jung
Jeon No-min
Kang Yi-Soo
Uhm Hyo-seop
Kang Yi-Moon
Oh Seung-hyun
Min Joo-Kyung
Jung In-gi
Jung-Nam
Hwang Hee
Lee Yoo-jun
Jung Min-ah
Kang Mi-Rae
Cheon Young-min
Lee Da-hae
Kwon Hwa-woon
Heo Joon
Son San
Hong Yun Jin
Lee You-mi
Na Kyung Ah
Kim Yeong-hun
Han Myung Oh
Jeong Jae-seong
Kwon Suk
Yun Ju-sang
Lee Won Gil
Jung Kyung-soon
Yoo Joon's mother