At the engagement ceremony, Lu Yiyi accidentally broke into the cheating scandal between her fiancé Jiang Haoyu and her best friend. After many years of relationship, she broke off the engagement in public. The scene was very embarrassing. At this time Jiang Haoyu's rival Pei Hengyan happened to appear, and the frustrated Lu Yiyi impulsively proposed to marry him in public. Pei Hengyan, who has a calm and serious personality, agreed on the spot, and the two quickly obtained the marriage certificate. At first this was just a temporary union, but after the marriage, Pei Hengyan protected Lu Yiyi everywhere, being gentle and reliable. Lu Yiyi slowly let go of the past and fell in love with him. On the other hand, Jiang Haoyu and her best friend who betrayed her had constant conflicts and brought the blame on themselves. Lu Yiyi also gained true happiness in this unexpected marriage.