Underground

Underground (지하도) is a Korean-language horror and mystery film scheduled for theatrical release on August 13, 2026, produced by Korea Creative Content Agency. The story centers on Seung-hyeon, a construction team leader living with PTSD, who is assigned to inspect Dohak Station — an eerie, abandoned site where a fatal accident brought construction to a halt years before. Once inside the tunnels, Seung-hyeon and a companion named Joo-young encounter two unidentified workers and find themselves unable to find a way out. Simultaneously, a CEO and a shaman conduct a ritual intended to restart construction at the site, an act that provokes the station's spirits, sending every party involved into escalating chaos.