A série gira em torno do departamento de cirurgia torácica de um hospital.
Go Soo
Park Tae-Soo
Uhm Ki-joon
Choi Seok-Han
Seo Ji-hye
Yoon Soo-Yeon
Jung Bo-seok
Yoon Hyun-Il
Nam Kyung-eup
Yoon Hyun-Mok
Kim Ye-won
An Ji-Na
Jang So-yeon
Kang Eun-Sook
Oh Dong-min
Moon Seung-Jae
Ahn Nae-sang
Koo Hee-Dong
Lee Jae-won
Nam Woo-Jin
Cha Soon-bae
Lee Joong-Do
Son Kwang-Eop
Son Jae-Myung
Jo Jae-yun
Hwang Jin-Chul
Hong Lu-hyeon
Jung Ji Won
