Gotham's Dark Knight

A gang of masked criminals robs a mafia-owned bank in Gotham City, each betraying and killing each other until the sole survivor, the Joker, reveals himself as the mastermind and escapes with the money. The vigilante Batman, district attorney Harvey Dent, and police lieutenant Jim Gordon ally to eliminate Gotham's organized crime. As Batman's alter-ego, the billionaire Bruce Wayne, publicly supports Dent as Gotham's legitimate protector, believing his success will allow Batman to retire so Wayne can romantically pursue his childhood friend Rachel Dawes, despite her relationship with Dent.

Gotham's mafia bosses gather to discuss protecting their organizations from the Joker, the police, and Batman. The Joker interrupts the meeting and offers to kill Batman for half of the fortune their accountant, Lau, concealed before fleeing to Hong Kong to avoid extradition. With the help of Wayne Enterprises CEO Lucius Fox, Batman finds Lau in Hong Kong and returns him to the custody of Gotham police. His testimony enables Dent to apprehend the crime families. The bosses accept the Joker's offer, and he kills high-profile targets involved in the trial, including the judge and police commissioner. Although Gordon saves the mayor, the Joker threatens that his attacks will continue until Batman reveals his identity. He targets Dent at a fundraising dinner and throws Rachel out of a window, but Batman rescues her.