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Underground

2026 1hr : 32m Mystery · Horror ★ 3.5

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.

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Viewing guide

Is Underground right for you?

Why it may be worth watching

  • Underground combines Mystery and Horror elements in one feature.
  • The principal cast includes Shin Hyun-soo, Lee Yu-ji, Ko Gun-han.

Who may enjoy it

Best suited to viewers looking for Mystery, Horror. Its shorter runtime also makes it easier to fit into one sitting.

Content notes

A regional age classification is not currently listed. Metadata signals include frightening or intense material. Ratings vary by country; use this as a quick screening note rather than a complete parental guide.

Themes and topics
construction sitesubway tunnelunderground tunnel

Viewing guidance uses the title details shown on this page; classifications may differ by region.

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