A sound designer Sang Woo lives with his grandmother who has dementia, his father and his aunt. At winter, he meets Eun Soo, a small-town radio producer. They go on a recording trip together for preparing radio program that plays sound of nature. They spend the night at Eun Soo's place and fall in love too easily. However, their relationship stumble in summer. Eun Soo who had divorced before tells Sang Woo that she is not planning to get married and she wants to break up. Sang Woo who cannot accept this gets confused and crazy.