Seventeen-year-old Jae Hee and Yeong Nam are in their first love. When Jae Hee suddenly dies in a car accident, Yeong Nam tries to bury her deepest sadness in her heart. However, Yeong Nam cannot help feeling, hearing, and talking to him in her everyday life. Later, she finds out that Jae Hee did not notice the car on that day because he had something on his mind. (KOFIC)