In four years, she has become a married woman, extremely ordinary. And he is an elite who has returned from overseas. In the vast sea of people, one is heading south and the other is heading north. The deep love of the past and the apology of the present world, one is the lover buried deep in her heart, and the other is her lingering husband. They met again because of his engagement party. "You treacherous woman. I owe you something to torture me like this." "But it was you who fell in love first. We had no results." Whose fault is it? When we meet again, can we transcend worldliness and ethics and return to our original destiny.