Zhu Wantang, a 19-year-old college student, is pestered by a suddenly appearing teenager, Zhu Chenyang, who claims to come from the future and turns out to be her biological son. A paternity test shatters all reason, and even more shockingly, the teenager asserts that her future husband will not be her gentle and considerate fiancé Meng Huaixu, but Zhou Yanci, who has always been cold and distant toward her. As the future prophecies come true one after another and Zhou Yanci's attitude gradually turns ambiguous, Zhu Wantang falls into a dilemma: if fate has already been written, should she submit or rebel?