The story revolves around two detectives who investigate mysterious incidents in a village. The drama will reinterpret those events and the characters in the book to match Korean sentiments and show the ugly side of human nature. When Go Jung Woo was younger, he was smart enough to be on the early admission list to medical school. After taking his SAT (scholastic ability test), he went on a trip, but ever since that day, he became a murderer. He returns to his hometown after being released from prison and comes across what happened 11 years ago.