The series revolves around the thoracic surgery department of a 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
