Yoon Se-Ri (Son Ye-Jin) is an heiress to a conglomerate in South Korea. One day, while paragliding, an accident caused by strong winds leads Yoon Se-Ri to make an emergency landing in North Korea. There, she meets Ri Jeong-Hyeok (Hyun-Bin), who is a North Korean army officer. He tries to protect her and hide her. Soon, Ri Jeong-Hyeok falls in love with Yoon Se-Ri.