Batman faces his greatest challenge yet: vacation! The caped crusader reluctantly lets Batgirl and Nightwing take him on a long-overdue vacation from crime fighting while Superman and the Justice League watch over Gotham City. When Batgirl and Nightwing take Batman on a trip down memory lane - literally - to visit a key mentor from Batman's formative years, the Bat trio encounters old nemeses, and invaders from the center of the earth show Superman and the other Leaguers just how busy Batman is on a regular basis. It's a brick-tastic battle on two fronts as Batman, Batgirl and Nightwing take on Bane and Deathstroke while the Justice League - with some help from a few Teen Titans - fends off an assault by many of Batman's infamous adversaries and ensures Gotham City's safety.