[2] It follows the story of the ruthless attack of an unknown creature in the Korean Demilitarized Zone, and the search operation of elite special force to uncover the truth.

[6] Special Polaris Mission Unit 1997 Operation of the DMZ Chengong-ri village people Others On October 25, 2019, OCN's marketing chief Choi Kyung-joo announced during the channel's "Thriller House" press conference that Search would be among the 11 television series which would air in 2020.

[7][8] Search is the fourth installment of OCN's "Dramatic Cinema" project (which combines film and drama formats), following Trap (2019), Hell Is Other People (2019) and Team Bulldog: Off-Duty Investigation (2020).

It is also the first project of its newly launched OCN Studio division[9] and South Korea's first military thriller drama set in the Korean Demilitarized Zone.

[19] On September 14, OCN released two posters featuring the main cast and the phrase "a fear that no one has ever seen," which announced that the series would premiere on October 17.