Underground
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 while trying to escape. Meanwhile, a CEO and a shaman perform a ritual to resume construction, but enraged spirits retaliate, plunging everyone into chaos.
Director: Choi Woo-sik
About Underground
Underground (2026) is a Mystery and Horror movie directed by Choi Woo-sik, starring Shin Hyun-soo, Lee Yu-ji, and Ko Gun-han. It was released on Aug 13, 2026. It runs 1h 32m. It carries a 15 age rating.
Watch Underground online free on Chouflix — the full movie streams in HD with subtitles in English, French and Arabic where available. No sign-up or subscription needed.
Frequently asked questions
Where can I watch Underground online?
You can watch Underground online free on Chouflix — multiple servers, HD quality and no sign-up required.
Is Underground free to watch on Chouflix?
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Does Underground have subtitles?
Chouflix offers subtitles for Underground in multiple languages including English, French and Arabic when available.
