Kim Rae-won as Kang Do-young

Lee Jong-suk as Jeon Tae-seong

Jung Sang-hoon as Oh Dae-oh

Park Byung-eun as Cha Young-han

Lee Sang-hee as Jung Yoo-jung

Jo Dal-hwan as Roh Jung-sub

Cha Eun-woo as Jeon Tae-ryong

Lee Min-ki as Hwang Young-woo

Kim Seul-ki as Han Mi-nyeo

Kang Kyung-hun as Manager

Woo Ji-hyeon as Kim Yoo-taek

Jeon Ah-hee as Teacher

Na Hyun-woo as Sung-woo

Jo Yeon-woo as Dae-woo

Park Jin-soo as Minister

Cho Kang-hyuk as Ship crew

Jeong Woo-hyuk as Chief of Naval Staff