As doctors and as humans, the five friends each face a maze of life's questions and decisions as they figure out their next steps.
Gastrollen:
Hong Ru Hyeon([Stillbirth mother]), Jung Min-Sung(Chang Hak), Park Bo-kyung([Chang Hak's wife]), Hoon Song([Patient]), Jun Joon Woo([Ji Hyun's father]), Kim Mi-kyoung(Cha Mi Kyung), Lee Joong-yeol([Astrocytoma patient]), Choi Nam-Wook([Neurosurgery patient]), Jang Ha-eun([Brain hemorrhage patient's daughter]), Kim Ryeo-eun([Pregnant wife]), Kim Gyeong-min(Mr. Jung [Tae Yang's aide]), Jeong Si-yul(Dong Ju), Hwang Hee-jung(Han Seung Hui [Pregnant woman in waiting room]), Lim Jung-min([Attorney]), Kwon Hyuk-soo([Jung Min's father]), Eom Ok-ran([Astrocytoma patient's wife]), Son In-yong([Pregnant wife's husband]), Lee Seo-jun(Kim Hyun Su [Brain tumor patient]), Kang Jong-Sung([Ji Hyun's grandpa]), Lee Ji-Young(Ko Jung Min), Go Do-yeon(Ji Hyun [Patient]), Kim Mi-hui([Ji Hyun's mother]), Oh Jung-Woo([Cirrhosis patient]), Nam Sang-ji([Cirrhosis patient's wife]), Yook Mi-ra([Cirrhosis Patient's mother])