The BioShock Infinite demo opens with the game’s protagonist, former Pinkerton agent Booker Dewitt, battling through the streets of Columbia, a crumbling city in the sky. He has come to rescue Elizabeth, a mysterious young woman imprisoned there since childhood. As DeWitt and Elizabeth merge their powers in a desperate bid to escape the city, viewers will witness intense indoor and outdoor battles, new weapons and abilities, and dangerous new enemies including Elizabeth’s terrifying captor.