Su Ningshuang thought that her breakup with Shen Mingyu was the last decent farewell in her youth. It was not until a business reception three years later that she negotiated with Shen Jingting, chairman of the Shen Group, as a partner's representative. After several contacts, she was unexpectedly moved by this mature and steady man and nodded in agreement with his pursuit.
On the night of the engagement party, Shen Mingyu barged in with a fierce look, grabbed her wrist with red eyes, and his voice was full of disbelief: "Su Ningshuang, tell me, why is the person you want to marry my father?"
She looked at the familiar yet unfamiliar ex-boyfriend in front of her, and then thought of the gentle fiancé beside her, and she was shocked to realize that this emotional entanglement had already turned into a mismatched relationship that was constantly being cut and confused by fate. On one side is the unforgettable love of a young boy, on the other side is the mature companionship that has gone through years of experience. When her "ex-boyfriend" becomes her "stepson", Su Ningshuang stands at the crossroads of this absurd relationship, not knowing how to make a choice. She never thought that there is an unknown secret hidden behind this seemingly unexpected reunion and union...