[1][2] The series, directed by Kim Jung-hyun and written by Shin Yoo-dam, revolves around two police officers as they dig up the secrets of mysterious events that occurred in a village 28 years ago.

[5] Do Jung-woo is the leader of a special task force in the Seoul Metropolitan Police Agency, who investigates a series of mysterious murders together with his team - a hot-headed officer named Gong Hye-won, and Jamie, a detective on loan from the FBI.

They uncover clues that these crimes are somehow related to a tragic event that happened 28 years ago in a village called "White Night".

In December 2019, 935 Entertainment, Namkoong Min's agency, reported that he had received an offer to play Do Jeong-woo, an investigator.

[23][24] In October 2020, Baek Ji-won and Lee Shin-young were confirmed to appear in the series,[12][25] as the script reading was continued from where it was left in August.