LEGO Batman II is the name of the upcoming sequel to the 2008 video game LEGO Batman: The Video Game.
Ra's Al Ghul and the League of Assassins has come to Gotham City and liberates several of Gotham's greatest criminals. Batman, Robin, Batgirl, and Nightwing now go out to battle the criminals, and stop Ra's' plan to destroying Gotham.
Chapter 1: Everything Freezes
Level 1: Jailbreak
Plot: Ra's and his ninjas have attacked Arkham Asylum. Ra's has offered some of the criminals to join him. Some accept but others form different factions. Including Mr. Freeze who has recruited Poison Ivy, Bane, Killer Croc, and Firefly to help in a plan to freeze over Gotham.
Batman and Robin arrive and have to fight the inmates to try and restore order, and at the end have to fight Firefly. After defeating Firefly the Asylum is retaken, but most of the most deadly villains have already escaped.