Sometime in 1970s, Mok-ryeon, raised in an orphanage, endures hardships and finally finds a loving husband, leading a happy life. However, she witnesses him cheating on her with his friend and dies in an accident. Time passes, and Mok-ryeon, reincarnated as Ahn Hye-seo, resolves not to love in this life. However, on her first day of high school, Yoo Seong-ha, who looks exactly like her husband from her previous life, appears, shaking her resolve.