It is ten years after an aging Batman has retired, and Gotham City has sunk deeper into decadence and lawlessness. Now, when his city needs him most, the Dark Knight returns in. Joined by Carrie Kelly, a teenage female Robin, Batman takes to the streets to end the threat of the mutant gangs that have overrun the city. And after facing off against his two greatest enemies, the Joker and Two-Face, for the final time, Batman finds himself in mortal combat with his former ally, Superman.