Ellen (Maggie Cheung), abandoned by her husband, and Mike (Leon Lai), a cynical founder of an Internet company, fell in love at first sight in San Francisco, USA, and began a love battle. The nature of women made Ellen unconsciously invade Mike's personal space, which made the unruly Mike resist, but he was finally moved by Ellen's unconditional dedication, and the two lived together. However, after the passion and warmth, because Mike's company encountered financial difficulties, the two began to quarrel constantly, exposing the fact that their worldviews were very different. In extreme frustration, Ellen proposed to break up, but just like the fall of Hong Kong City made Bai Liusu and Fan Liuyuan complete, the great earthquake in San Francisco a year later provided an opportunity for them to hold hands again.