The series revolves around the thoracic surgery department of a hospital.
Park Tae-Soo
Choi Seok-Han
Yoon Soo-Yeon
Yoon Hyun-Il
Yoon Hyun-Mok
An Ji-Na
Kang Eun-Sook
Moon Seung-Jae
Koo Hee-Dong
Nam Woo-Jin
Lee Joong-Do
Son Jae-Myung
Hwang Jin-Chul
Jung Ji Won
Lee Sun-Yeong
Lee Ye Rin
Nurse
[Kim Sung Hee's guardian]
