WhenBatgirlandNightwingtakeBatmanonatripdownmemorylane,literally,tovisitoneofthekeymentorsfromhisformativeyears,it’suptotheJusticeLeaguetokeepGothamCitycrime-free.Butneithersituationprovestobea“vacation”astheBattrioencountersoldnemesesontheiradventure,andtheJusticeLeaguediscoversjusthowbusyBatmanisonaregularbasis.It’sabrick-tasticbattleontwofrontsasBatman,BatgirlandNightwingtakeonBaneandDeathstroke,whiletheJusticeLeague,withsomehelpfromafewTeenTitans,fendsoffanassaultbymanyofBatman’sinfamousadversariestoensureGothamCity’ssafety.