Kim Nam-gil

as Jae-hyuk

Kim Joo-hyun

as Yeon-joo

Kim Myung-min

as President

Lee Kyung-young

as Prime Minister

Kim Young-ae

as Mrs. Seok

Jung Jin-young

as Pyung-sub

Moon Jeong-hee

as Jeong-hye

Bae Gang-Yoo

as Min-jae

Kim Dae-myung

as Gil-seop

Yoo Seung-mok

as Mr. Kam

Kang Shin-il

as Mr. Kong

Kim Se-dong

as Mr. Nam

Song Young-chang

as New Director at Nuclear Power Plant

Kim Young-woong

as Mr. Hwang

Kim Han-jong

as Jin-taek

Kwak Min-seok

as Head of Foreign Cooperation

Park Sun-Hee

as Mr. Gam's Wife

Kong Jeong-hwan

as Senior Presidential Secretary

Kim Hye-eun

as First Lady

Baek Do-bin

as Chief Rescuer

Hong Seok-bin

as Doctor

Kim Keum-soon

as Villager

Oh Ye-seol

as New Nurse

Park Pal-Young

as Minister of Commerce, Industry and Energy

No Kang-min

as Young Jin-taek

Park Joon-young

as Storage Tank Recovery Team

Cho Han-cheul

as President of Shimwon E&C

Jeong In-gi

as Fire Marshal

Son Jong-hak

as President of Korea Hydro & Nuclear Power

Song Young-chang

as New Director of the Headquarters

Kim Jong-goo

as Nuclear Safety Committee Chairman

Shim Young-min

as National Security Chief

Kang Suk-won

as Machinery Team Leader

Moon Jong-il

as Rescue