Dark Hole

Detective Lee Hwa Sun (Kim Ok Bin), a widow whose husband was brutally murdered, works in the Seoul Metropolitan Police Agency. When she receives a phone call from her husband's killer, she follows the lead to Mujishi, discovering a city transformed by a mysterious dark smoke that mutates residents into monstrous creatures. Partnering with Yoo Tae Han (Lee Joon Hyuk), a former local detective, Hwa Sun must unravel the city's terrifying mystery while seeking her husband's murderer. Facing impossible odds, the duo battles the transformed inhabitants and the dark, sinister force threatening to consume the entire city. This is a chilling 2021 South Korean sci-fi action thriller directed by Kim Bong Joo.