在这部雪人剧情片中,Yeon-soo is in Gangwon-do on a business trip. Due to a bad snow storm, she ends up staying at the same motel she and her friend Chul-min stayed during a trip in college. She has two things that are tearing her up inside: She and her husband aborted a long-awaited pregnancy because they found out the baby might have birth defects, and she ignored Chul-min’s misfortune and he committed suicide. Yeon-soo becomes curious about a girl named Anna staying in Yeon-soo and Chul-min’s old room#313. Strange things begin to happen as Anna and an odd couple, Joe and Park come to the motel.
When Yeon-soo finds out his long awaited baby has fatal deformities, he asks his wife to get an abortion which results in pain and depression. Also, he ends up getting cut by his company over a bad incident. To take a break from his painful life, he goes to a motel he had stayed with his best friend Chul-min while traveling in his college years. As he recalls his past memories with Chul-min, he meets two mysterious men, Joe and Park, who are staying on the same floor with him in the motel and spends a strange, eventful night. Yeon-soo is curios about the two men and decides to watch them. But the next day, he meets a young girl named Anna who had come to meet her father. It doesn't take long for Yeon-soo to discover a deadly connection between the Anna and the mysterious men.
