Su Yao, who is about to get married to her college boyfriend Ji Yi, who has been in love for seven years, unexpectedly learns that her boyfriend has cheated on her. The mistress turned out to be her good sister in the past. Su Yao tried hard to save this love, but was stabbed by the mistress, and her soul was able to travel to the unknown country of 'Mingxue Country'. Well, let's just go back in time, and it turned out to be a waste queen...