Achiara is a quiet village where life seems to move in gentle rhythms, and its residents are content with their peaceful routines. For Han So-Yoon, a new English teacher, it promises a fresh start. But her first day destroys this illusion when she stumbles upon a buried corpse. The discovery sends shockwaves through the town, sparking whispers about the victim’s identity and the cause of death. Teaming up with Park Woo-Jae, a determined local cop, So-Yoon dives into the mystery. As they dig deeper, they uncover a web of secrets and lies lurking beneath the village's serene surface. The once-friendly townspeople reveal hidden cracks, each with their own dark past. As the investigation unravels, So-Yoon and Woo-Jae realize how deeply connected their lives are to the crime, and how little they know about the seemingly tranquil village. A simple murder inquiry spirals into a terrifying truth, exposing the ugliness buried beneath its calm exterior.