THE DARK KNIGHT™ With the help of Lieutenant Jim Gordon and District Attorney Harvey Dent, Batman sets out to destroy organized malfeasance in Gotham City for good. The triumvirate proves to be effective, but they soon find themselves prey to a rising lawbreaker mastermind known as the Joker, who thrusts Gotham City into anarchy and forces the Dark Knight ever closer to crossing the fine line between hero and vigilante.