剧情：XiaXiaisasinglemotherandalsoaseniorresearcheroftheInstituteofPhysics.Shehasbeencommittedtostudyingparticletechnologythatcanreturntothepastformanyyears.Onedaywhenbaoshu8.comtheresearchisabouttosucceed,XiaXiafoundthathersonDoudouwaskidnappedbythemysteriouskidnapperCuiHu.CuiHuthreatenedDoudou’slifetohandoverparticletechnologyinsummer.InordertosaveDoudou’slife,XiaXiaventuredtousetheunfinishedparticletechnologytoreturnanhourand50minutesago,whichmadethingsmorecomplicated,ThestorybehindCuiHu’sstoryalsograduallysurfaced.收起