Achiara is a quiet, peaceful village with hardly any crime. However, on her first day in the town, English teacher Han So-yoon discovers a buried corpse. As the townspeople speculate on the identity of the dead person and the reason she was killed, rookie policeman Park Woo-jae - who has finally accomplished his dream of becoming a policeman after failing the exam three times - team up with So-yoon to uncover the secrets hidden in the seemingly idyllic town.