Arkham Asylum has undergone a massive breakout and all manner of super-villains are running rampant throughout Gotham City. While rounding up the escaped inmates, Mr. Freeze, The Joker, Harley Quinn, Roxy Rocket, Poison Ivy and Bane, Batman comes to find out that it was Two-Face who masterminded the breakout and must put a stop to him before he can bring Gotham City to its knees. (Wiki)