Mi-Rye is a high school girl who participates in volunteer service in a rural village during summer vacation. When she gets lost in the mountain, she meets Tae-Ho who is a member of biology club of boys' high school. He is on his way down to village after he finishes gathering herbs and plants on high altitude. They stray in the thick fog and finds a villa where they stay awake. The next morning, they are found by teachers. They are expelled from school because the older generation and teachers don't believe their sexual morality. Years later, Mi-Rye fails to accomplish her love with Tae-Ho, and marries to another man.