Onlyadayafterreturningfromthepast,Batmanandhisalliesdiscoverthattheworldisn'tquitethesameastheyleftit.TheentireislandofJapannolongerexistsandneitherdotheheroesoftheJusticeLeague.Butbeforetheycangetahandleonwhatisgoingon,yakuzaliterallystartrainingfromtheskies.
