Lin Xiaoman and Chen Xubai have had a deep friendship since childhood. They treasure the secrets of their childhood in an iron box under the old locust tree. As they grew up, life changes forced them to separate. Many years later, Lin Xiaoyi unexpectedly discovered a series of mysterious clues related to Chen Xubai, and his dusty memories were reopened. In the process of pursuing the truth, they gradually uncovered an emotional story that spans time and space and is full of fantasy with the help of VR, brain-computer interface and other technological means. The ethical issues of memory tampering also shrouded them like a shadow, making this relationship even more complicated and confusing. When everything settles, can they regain the original beauty in the gap of time?
