Four years after breaking up with Gu Chengyan, An Liya returns to the country with her son An Nian. Meeting her ex-husband by chance at a kindergarten, the child turns out to look identical to Gu Chengyan. Reuniting at a drinking party, she suffers misunderstanding and humiliation from Gu Chengyan, leaving her with no way to voice the hidden hardships that forced their breakup back then. Gu Chengyan senses something suspicious about the child, while his fiancée Su Wanqing, driven by jealousy and hatred, repeatedly gives the mother and son a hard time, even exposes the truth about causing the death of the heroine's mother years ago, and desperately kidnaps An Nian. After the crisis, the four-year misunderstanding is completely unraveled. Filled with guilt, Gu Chengyan embarks on the path of winning back his wife, making up for the lost time with the mother and son. Having gone through storms and separation, the two clear up all their emotional knots and hand in hand welcome a grand and fulfilling wedding.