Chicago police lieutenant James Gordon relocates to Gotham City and begins working under Commissioner Gillian B. Loeb. Already he finds himself detesting the grime of the city, but his thoughts are on his pregnant wife, Barbara. Inwardly, he hopes her tests come back "negative".
Meanwhile, Gotham City's most eligible bachelor Bruce Wayne returns to the United States after nearly twelve years abroad ever since the age of thirteen. He plays up the role of billionaire playboy, but secretly he is anxious to begin a new career as a crime fighter. He wants to avenge the tragic deaths of his parents, Thomas and Martha Wayne.

Across town, James Gordon meets some of his fellow officers, including the brutish Lt. Arnold Flass. It doesn't take Gordon long to realize that Flass represents only a tiny fraction of a trail of corruption that extends all of the way to the Commissioner's office. Gordon learns that Flass is reckless and is not above accepting the occasional bribe. However, Gordon’s own moral code is strong and he refuses to buckle beneath the weight of corruption.
Flass grows concerned and tells Commissioner Loeb that Gordon may not be a "team player". Coyly, Loeb gives Flass permission to teach Gordon a lesson. That night, Flass and three other officers don ski masks and corner Jim in the parking garage. They mercilessly beat him with baseball bats, but Gordon recognizes the sound of Flass' laughter and vows to strike back.

Later, Jim takes his car and follows the crooked cops back to a place called Chute's. He waits for them outside until they are ready to leave. As Flass drunkenly stumbles out of the building, Gordon attacks him. He beats Flass up, strips him naked and leaves him bound with his own handcuffs on the side of the road. Jim is confident that the incident will go unreported.

Some nights later, Bruce Wayne disguises himself as a vagrant and begins patrolling the seedy streets of Gotham's East End. He gets into an altercation with an albino pimp named Stan over an adolescent prostitute named Holly. Bruce and Stan's fight attracts the attention of another one of Stan's working girls – Selina Kyle. Selina tries to defend Stan, but Bruce lays her out with one blow across the jaw.
Suddenly, police officers arrive and take the disguised Wayne into custody. Bruce breaks free of his handcuffs and forces the police cruiser off the road. Wounded and bleeding, he manages to make his way back to his Porsche and return home to Wayne Manor. He reflects upon the night that a common mugger savagely gunned them down in the street, leaving him an orphan. Suddenly, a bat crashes through the open window. Bruce takes it as a sign and promises to avenge his parents' deaths by taking on the form of a bat.

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