In 2066, in the "Rose City" Science Institute, the elderly physicist "Chen Sen" was bedridden with a terminal illness. A "familiar" photo placed on the bedside table often reminded him of the scenes of his son's death and his wife's death. In order to fulfill his last wish, Chen Sen, who was tortured by memories, implanted the only untested "particle chip" in the institute to try to reverse the past and save his deceased relatives, but he did not expect to trigger a shocking crisis...