The Fall of Gotham

In an alternate story, it is nearing the fall of Gotham as the Joker is escorted to the Arkham Asylum for what seems like the last time. There he meets the devilishly beautiful Hellion by the name of Harley Quinn. Joker is able to break free from his padded cell, and upon a strong instinct, takes Harley with him toward his abandoned mansion overlooking Arkham City. Thus begins a twisted and wonderfully delicious story of death, power, an insane love, and the Fall of Batman, bringing Gotham down itself.
(Heavy Sexual content, many kinks are involved. Lots of gore and violence. This is a Fan-made story and not accurate to the real story, this is purely alternative.)