Joker escapes from Arkham Asylum and kills the parents of a young boy as he killed the parents of Batman in the past. Determined to take revenge, Batman fights against anyone that tries to stop him as well as evils of underworld Gotham. After all those battles, Batman questions his own psychological problems and tries to find a solution.

City of Scars

Arkham has been hell since the death of The Joker and it's up to Batman to stop Poison Ivy who has caught Nightwing and is experimenting with him while Ivy has sent Killer Croc to kill Batman.