Guo Ni had a flash marriage with Ding Weian, an elite Hong Kong investment banker, and worked hard to integrate into Hong Kong life, learning Cantonese, making soup, and knitting scarves, but she found mysterious women's underwear in her husband's suitcase. Luo Yan made a surprise visit to Hong Kong on the pretext of "purchasing a dowry", but in fact she had a hidden agenda - she took the opportunity to get close to Hu Shaobin, Guo Ni's ambiguous partner in Shenzhen. As the plot progresses, the conflicts between the sisters escalate: Guo Ni's forbearance behind the mask of Hong Kong elegance, Luo Yan's inferiority under her flamboyant style, and the psychological game between the two that has spanned twenty years gradually comes to light. Clues such as Ding Weian's family secrets (the pilot boyfriend caused his sister's suicide attempt), the cultural collision between Hong Kong and Shanghai, and the truth about marriage are intertwined, and finally the identity dilemma of modern urbanites is revealed in the sunset over Victoria Harbor.
