Batman raises the stakes in his war on crime. With the help of Lieutenant Jim Gordon and District Attorney Harvey Dent, Batman sets out to dismantle the remaining criminal organizations that plague the city streets. The partnership proves to be effective, but they soon find themselves prey to a reign of chaos unleashed by a rising criminal mastermind known to the terrified citizens of Gotham as The Joker.

Right after taking out Ra's Al Ghul's plan and the mysterious disappearance of Dr. Jonathan Crane AKA Scarecrow, Batman continues his seemingly-endless effort to bring justice to Gotham's crime and corrupt with the help of Lt. James Gordon and new appointed District Attorney Harvey Dent. But this time, The Dark Knight faces a rising psychopathic criminal called The Joker, who's eerie grin makes him more dangerous than what he has yet to unleash. It becomes an agenda to both enemies that only one of them remains and are willing to break every part of what they believe in to stop the other.

Set within a year after the events of Batman Begins, Batman, Lieutenant James Gordon, and new district attorney Harvey Dent successfully begin to round up the criminals that plague Gotham City until a mysterious and sadistic criminal mastermind known only as the Joker appears in Gotham, creating a new wave of chaos. Batman's struggle against the Joker becomes deeply personal, forcing him to "confront everything he believes" and improve his technology to stop him. A love triangle develops between Bruce Wayne, Dent and Rachel Dawes.