兒子失蹤6年，赫然傳來疑是孩子下落的消息，母親決定隻身走到漁村，希望找出失散多年的兒子。奈何冷血的村民聯同魔警想把孩子留下當生財工具，將她拒諸於門外。母親唯有在雷雨交加的晚上，以極端手段再闖虎穴。首次執導的金承右，根據韓國真實社會事件改編，描繪由心而發的暴力，教人觸目驚心。
Jung-yeon’s 6-year-old son Yoon-su disappeared in a playground near her home. It’s been 6 years since she and her husband Myeong-guk searched for him tirelessly. One day, Jung-yeon receives an encouraging tip from an unknown caller. The tipster provides detailed information about Yoon-su that wasn’t included on the missing person flyer, and she doesn’t hesitate to drive down to a fishing spot in the country.
Upon arrival, she feels strange vibe from the owners and residents of the sleepy village where the fishing spot is located. She looks for a boy named Min-su, whom the tipster said was her son, but everyone there denies that a boy of that name exists. The villagers lock up Min-su in a container but he manages to slip out. While attempting to flee, he gets caught by the villagers and is chased to the end of the seawall. Will Jung-yeon ever find her son Yoon-su?
