The Zhuang, Lin, and Wu families live in a small alley in Suzhou during the late 1970s. As societal changes unfold, the parents and children in each household experience dramatic shifts in their fates, forever altering their lives and relationships.
In 2031, Qin retires alone on a small island, as his wife Xiaoxiao is away all year long. Fan, Qin's friend, designs an android identical to Xiaoxiao to keep Qin company.