Underground poster
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Underground

3.520261h 32mMovieMysteryHorror

Seung-hyeon, a construction team leader with PTSD, is ordered to inspect Dohak Station, where a fatal accident halted work years ago. Inside the eerie, abandoned tunnels, he and Joo-young encounter two mysterious workers and become lost…

DirectorChoi Woo-sik

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Underground was released on August 13, 2026 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Cast · Directed by Choi Woo-sik

SHShin Hyun-soo
Shin Hyun-soo
Kwon Seung-hyeon
LYLee Yu-ji
Lee Yu-ji
Lee Joo-young
KGKo Gun-han
Ko Gun-han
Yang Jung-kook
PHPark Hyun-young
Park Hyun-young
MSMun Seong-bok
Mun Seong-bok
JHJung Hyung-suk
Jung Hyung-suk
HSHong Seong-pyo
Hong Seong-pyo

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See all fromShin Hyun-soo

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Underground — streaming FAQ

Which OTT platform streams Underground?

Underground isn't streaming anywhere in United Kingdom yet.

Is Underground on Netflix?

No, Underground is not on Netflix in United Kingdom as of October 2026.

Is Underground on Amazon Prime Video?

No, Underground isn't on Amazon Prime Video in United Kingdom right now.

Where can I watch Underground for free?

Underground isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.

What is the OTT release date for Underground?

Underground hasn't started streaming in United Kingdom yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around October 1, 2026. This is a prediction, not a confirmed date.