The shocking events of METAL have transformed Gotham City into a mosaic of fantastical realms full of monsters, magic and DOOM! An SOS from Dick Grayson sends Robin back to Gotham to find a number of hometown heroes (and anti-heroes) including Batgirl, Harley Quinn, Killer Croc, Black Canary and a certain Emerald Archer all trapped in a Riddler-esque labyrinth of madness and death!
