Description：The story begins twenty years ago. In an accident, Grandpa Song (played by Chen Bozheng) became the lifesaver of Grandma Ke (played by Tan Aizhen). It happened that both of their wives were pregnant, so the two little babies were betrothed before they were born. Grandpa Song did not take Grandma Ke’s words seriously, but even though the two families completely lost contact afterwards, Grandma Ke, who was a stickler for details, still remembered the oath firmly. Twenty years have passed in a blink of an eye. The two babies of that year - Ke Weixiang (played by You Sheng) and Song Yijie (played by Chen Tingni), one became the general manager of the group, and the other became a strong woman working in a law firm. A small oath at the time brought together two people with completely different personalities and identities, and their friends were also caught up in the whirlpool of emotions.