There was an ancient story about a mermaid that lives in the lake by the old rundown shrine deep beneath the forest that hunts down people who get lost and feed on them. One day, Jeonghan, a city boy who started living in the rural area of South Korea because of his health problem found himself going to the lake. He was curious what was the thing that sparkles but it happen to be a human. Was it the mermaid everyone was talking about?