Song Mianmian, a blind girl, is abused by her scumbag father and forced into a marriage. Desperate, she flees with her mother, Lin Xiaozhen, but accidentally has a one-night stand with ophthalmologist Gu Huaijin and becomes pregnant. For the sake of the child, the two enter a flash marriage and live together. Gu Huaijin appears cold and restrained on the surface, but he has actually been secretly in love with Song Mianmian for years. After experiencing her father's schemes, an amnesia crisis, and misunderstandings about a body double, Song Mianmian finally realizes—this marriage is not out of duty, but a long-cherished, deep love from Gu Huaijin. Meanwhile, the wealthy uncle, Gu Ziqiang, turns out to be her mother Lin Xiaozhen's first love, who waited faithfully for thirty years. Eventually, they clear up their misunderstandings, send the father to prison, and their timeless love finds its happy ending. Both mother and daughter reap the best love, and their family of four enjoys an upgraded, sweet life.