Black Out — Season 1

On the day after the college entrance exam, two girls went missing in a peaceful rural village. Only traces of murder were left, and there were no bodies. The suspect identified in this case was Goh Jeong-woo, a model student from the village and a classmate of the two girls.

Jeong-woo visited the warehouse where the incident occurred, tormented by his memories. He sought to learn more about his mother's accident, but everyone dismissed him.

Jeong-woo is investigating his mother's accident, but Detective Noh Sang-cheol starts to suspect him after learning about his identity. Ha Seol, who becomes interested in past incidents in the village, discovers unusual bones and becomes intrigued.

Na-gyeom is upset about Jeong-woo's situation and urges him to go to Seoul together. As the investigation into Jeong-woo's case from ten years ago begins, Sang-cheol starts to have several doubts.

Bo-yeong's mother provokes Gu-tak with her demands. To make things worse, Su-oh also had a seizure, while Ha Seol senses something strange about the villagers. Meanwhile, Su-oh, who had been hospitalized, reappears with a completely different demeanor.

The person who threatened Jeong-woo with a gun was Bo-yeong's father, who had been released from custody. Meanwhile, Geon-oh whose suddenly returns from the US, causing problems for his father and the villagers.

Jeong-woo is shocked by the items that he found in Bo-yeong's bag brought by Geon-oh. Meanwhile, Su-oh who is confined in a mental hospital, attempts to reveal a secret to Ha Seol.

Byeong-mu provokes Sang-cheol to obstruct his investigation. Meanwhile, Geon-oh decides to testify about what happened that day.

Geon-oh's suicide leaves Gu-tak deeply shocked. Na-gyeom tells Bo-yeong's parents that Byeong-mu and Min-su were involved in Bo-yeong's death.

The warehouse door opens, and the truth from ten years ago begins to emerge. The hospital director, Hyung-sik, is being blackmailed by his wife, Congresswoman Ye Yeong-sil.

New evidence begins to resurface from the car that Jeong-woo's father had hidden. The anger of Bo-yeong's father, who has uncovered the truth, reaches a boiling point.

Shocking truths continue to be revealed after the shooting carried out by Bo-yeong's father. Hyeong-sik falls into a panic, while Sang-cheol puts pressure on Gu-tak.

Jeong-woo is deeply affected by the death of Min-su's father. At the same time, Bo-yeong's funeral is held, and Sang-cheol continues his investigation.

Na-gyeom reveals the shocking truth of that night. A dangerous situation arises for Jeong-woo, who finally learns the whole truth. The gubernatorial election reaches its climax and the last remaining door to the truth opens.