An unexpected love and a fantastic journey made Ye Nuannuan, who was in her first year of college, begin to understand the difference between love and marriage. Many years ago, Xiaoli met an angel named Tianche, thus abandoning her identity as a devil. The war between angels and devils added a curse of eternal regret to unforgettable love. In fact, Xiaoli is Nuannuan, and she has experienced the same unavailable love.