Two girls go missing in a peaceful village a day after the SAT exam. While the evidence of murder is discovered but not the corpses, Jung-Woo, a model student and the classmate of the two missing girl…

Jung-Woo arrives at a warehouse where the incident happened and falls in great agony over the memory of that day. Hearing about her mom's accident belatedly, Jung-Woo tries to determine the cause whil…

As Jung-Woo traces her mom's accident, detective Sang-Cheol suspects her when he finds out who Jung-Woo is. Ha-Seol, who got interested in the village's past incident, pays attention to the strange bo…

While the investigation of Boyoung's father, the key suspect in the fall of Jung-Woo's mom, is continued, Jung-Woo finally finds Boyoung and gets shocked.

Nakyum feels bad for Jung-Woo's circumstances and urges her to leave for Seoul together. An investigation of the past incident of Jung-Woo begins, and Sang-Cheol casts doubt on the case.

Boyoung's mom's demand provokes Goo-Tak. Also, Ha-Seol notices something strange from the village neighbors when Su-Oh falls into a fit. Meanwhile, Ha-Seol is astonished to see Su-Oh back from the hos…

The one who threatened Jung-Woo with a gun was Boyoung's father, who got released. Gun-Oh suddenly comes back from the States, and the way Goo-Tak looks at Gun-Oh is suspicious.

Jung-Woo gets shattered by the thing inside Gun-Oh's bag he brought. Su-Oh, trapped in the mental hospital, tries to tell Ha-Seol the secrets.

Sang-Cheol strikes against Byeong-Moo, who tries to block Gun-Oh's investigation. Simultaneously, Minsu discloses the truth.

Goo-Tak gets devasted by Gun-Oh's suicide. Na-Kyum reveals to Boyoung's parents that Byeong-Mu and Minsu are involved in Boyoung's death, and the entire village becomes enraged.

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 …