The movie starts out with Scarecrow meeting with the Chechen gang for a drug deal involving Scarecrows fear toxin. Vigilantes disguised as Batman disrupt the deal, causing a small gunfight. The Batman comes crashing down on Scarecrows van, capturing Joker and the gang members for the Gotham police to take care of.
After this, scenes establishing Maroni as the new boss of the Falcone family, as well as scenes involving other gangs, such as Gambles, the introduction of Harvey Dent will take place. Rachel Dawes and Dent go to the Opera, only to find it has been cancelled for the night. This is where the scene reintroducing Bruce Wayne and Alfred takes place. They are at a private party for the cast of the Opera on Bruces yacht.
The infamous bank robbery scene, with the Joker and his goons, and the following escape and police chase. Joker gets away, but is scarred.
Batman goes to investigate the robbery with Lt. Gordon, but comes to a dead end.
More vigilantes running wild in Gotham. Dent starting his case against Maroni and the gangs of Gotham City. Could be a good place for more scenes involving Dent and Rachels relationship. The batman impersonators cause Commissioner Loeb to put a warrant on the real Batman. Somewhere a scene with Rachel and Bruce, as well as more of Batman/Bruce Wayne investigating the Joker. Also, scenes establishing Mike Engel and his obsession with Wayne.
Dent promises the mayor a crime-free 18 months. A hanging fake batman bangs against the mayors window, causing chaos.
The Joker goes on a crime spree, killing many cops, mobsters, and citizens. Batman and Joker fight, Joker throws acid on batman. Gordon goes to Loeb and fakes his own death.
Lucius Foxs Wayne Enterprises is broken into. Wayne brings the extradited Lau to Gotham City.
More stuff involving Engel, Wayne, Fox, and a detective named Reese. Also, more mob related happenings and faux batmen. Engel promises to reveal Batman on T.V, but the Joker makes a bomb threat.
Gordon comes back; Loeb is killed by the Joker. At Loebs funeral, the Joker tries to kill the Mayor but he is saved by Gordon. He is still rushed to the hospital.
Joker blows up the hospital.
Maroni and many gang members are arrested due to Gordon and the Gotham PD.
On television, Dent announces that he is Batman.
There is a party held by Wayne which Dent and Rachel are present. The Joker crashes the party in order to kill Dent. Batman saves him and the Joker takes Rachel hostage. He dances with her while holding a knife to her throat, then leaves with her.
The Joker kills Rachel, but is caught by Gordon. Batman comes in to interrogate Joker, who reveals nothing. Batman leaves, and the Joker escapes due to a bomb planted in someones stomach.
Dent is scarred in court, he is rushed to (another?) hospital.
The climax, with the evacuation and the citizens of Gotham being loaded onto barges, along with the fight between Batman and the Joker in which Joker is either killed or captured.
It is announced that Dent has gone missing from the hospital.
Gordon is promoted to Commissioner.
Gotham is safe again thanks to Batman.
The final scene with Dent/Two-Face in the bar.