The lonely writer Min Yoongi looses everything when his younger sister, his only family left, dies in a horrible accident by the sea. Every year on new year's eve, he visits her grave and lays flowers on it, promising to return next year.

One time, after the short visit, he takes a walk by the shore like the past three years and picks up some sea shells because they were his little sister's favorite thing. While he was walking, he saw someone standing not too far with a big conch on their ear and as he went closer; he noticed the person was actually a guy who was humming a sweet melody with his eyes closed...