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Underground (2026) – Official Trailer, Cast & Details
Underground at a Glance
Underground is a 2026 mystery and horror film helmed by Choi Woo-sik, featuring Shin Hyun-soo, Lee Yu-ji and Ko Gun-han. It is 1 hour 32 minutes long and came out on August 13, 2026. Underground holds an average TMDB user score of 3.5/10 from 2 votes.
Official Trailer Coming Soon
An official trailer for “Underground” has not been indexed yet from verified studio channels.
Search Clips on YouTubeStoryline & Synopsis
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.
Where “Underground” Fits in the 123Movies Catalog
Frequently Asked Questions About Underground
When was Underground released?
Underground was released on August 13, 2026.
What is the runtime of Underground?
Underground has a runtime of 1 hour 32 minutes (92 minutes).
Who stars in Underground?
Underground stars Shin Hyun-soo as Kwon Seung-hyeon, Lee Yu-ji as Lee Joo-young, Ko Gun-han as Yang Jung-kook and Park Hyun-young. The cast also includes Mun Seong-bok, Jung Hyung-suk and Hong Seong-pyo.
Who directed Underground?
Underground was directed by Choi Woo-sik.
What genre is Underground?
Underground is listed on TMDB as a mix of mystery and horror.
What is the TMDB score of Underground?
On TMDB it has an average user score of 3.5/10 from 2 votes.
What movies are similar to Underground?
Movies TMDB recommends alongside Underground include The Ghost Station (2023), Night Watch (1973), The Red Shoes (2005), Race with the Devil (1975) and Kept Woman (2015).
Can I stream the full movie of Underground on 123Movies?
No. 123Movies only shows official trailers and title information. Full movies are not hosted or linked on this site.
The Ghost Station
Night Watch
The Red Shoes
Race with the Devil
Kept Woman
Deep Water
The Cellar
The Unhealer
The City of the Dead
Voice
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