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A man is on his way home when the poorly constructed tunnel he is driving through collapses, leaving him trapped leaving himself for the unexpected whilst emergency services struggle to help.
Ha Jung-woo
as Lee Jung-soo
Bae Doona
as Se-hyun
Oh Dal-su
as Dae-kyung
Shin Jung-keun
as Captain Kang
Nam Ji-hyun
as Mi-Na
Jeong Seok-yong
as Chief Choi
Lee Han-seo
as Soo-jin
Kim Hae-sook
as Minister
Yoo Seung-mok
as Reporter Jo
Park Hyuk-kwon
as Government Official
Cho Hyun-chul
as Young Rescuer
Lee Cheol-min
as Driller Captain
Han Soo-hyun
as Drone Technician
Kim Seung-hoon
as Public Hearing Moderator
Ye Su-jeong
as Old Mother
Jin Yong-uk
as Construction Worker
Lee Dong-yong
as Construction Worker
Ju Seok-tae
as Employee of Korea Expressway Corporation
Ahn Se-ho
as Driller
Seo Hyun-woo
as SNC Reporter
Lee Sang-hee
as YTN Reporter
Kang Shin-chul
as Agent
Jin Sun-kyu
as Equipment Manager
Lee Chang-jik
as Veteran Workman
Kim Sung-kyu
as Civic Group 3
Park Jin-woo
as Government Aide
Kim Ooh-jin
as SNC Anchor
Kim Jong-soo
as Drilling Company Executive
Lee Dong-jin
as Radio DJ
Ha Jung-woo
as Lee Jung-soo
Bae Doona
as Se-hyun
Oh Dal-su
as Dae-kyung
Shin Jung-keun
as Captain Kang
Nam Ji-hyun
as Mi-Na
Jeong Seok-yong
as Chief Choi
Lee Han-seo
as Soo-jin
Kim Hae-sook
as Minister
Yoo Seung-mok
as Reporter Jo
Park Hyuk-kwon
as Government Official
Cho Hyun-chul
as Young Rescuer
Lee Cheol-min
as Driller Captain
Han Soo-hyun
as Drone Technician
Kim Seung-hoon
as Public Hearing Moderator
Ye Su-jeong
as Old Mother
Jin Yong-uk
as Construction Worker
Lee Dong-yong
as Construction Worker
Ju Seok-tae
as Employee of Korea Expressway Corporation
Ahn Se-ho
as Driller
Seo Hyun-woo
as SNC Reporter
Lee Sang-hee
as YTN Reporter
Kang Shin-chul
as Agent
Jin Sun-kyu
as Equipment Manager
Lee Chang-jik
as Veteran Workman
Kim Sung-kyu
as Civic Group 3
Park Jin-woo
as Government Aide
Kim Ooh-jin
as SNC Anchor
Kim Jong-soo
as Drilling Company Executive
Lee Dong-jin
as Radio DJ
