The Wailing (2016) is a South Korean horror film directed by Na Hong-jin. It follows a small rural village in South Korea that is plagued by a mysterious and deadly virus. A police officer is tasked with investigating the cause of the virus and soon discovers that it may be linked
From Wikipedia
The Wailing is a 2016 South Korean horror film written and directed by Na Hong-jin and starring Kwak Do-won, Hwang Jung-min and Chun Woo-hee. The film centers on a policeman who investigates a series of mysterious killings and illnesses in a remote Korean village in order to save his daughter. The film was both a commercial and critical success.