One year after the death of the Joker during the events of Arkham City. Batman is struggling to come to terms with the absence of his nemesis and the uncomfortable feeling that the pair shared a bond deeper than either could admit. Without the Joker's chaotic presence, Gotham's citizens have never felt safer, and crime in the city has dramatically declined. However, this gives Batman's enemies, including Penguin, Two-Face, and Harley Quinn, a chance to unite with the singular goal of killing Batman.