
Jejoongwon is the first modern hospital in Korea established in the Joseon era in 1885. Baek Do Yang is a nobleman who gives up his status to enter its ranks. Hwang Jung is a butcher's son who becomes a physician, while Seok Ran enters Jejoongwon as an interpreter but takes on medical training to become a doctor.

Park Yong-woo
Hwang Jung

Cha Woong-ki
Young Hwang Jung

Han Hye-jin
Yoo Seok-ran

Geum Bo-ra
Yoo Seok-ran's mother

Choi Ja-hye
Naoko

Ricky Kim
Dr. John W. Heron

Kang Nam-gil
Watanabe

Cha Hwa-yeon
Hwang Jung Mo