For Erica Bain (Jodie Foster), the streets of New York are both her home and her livelihood. She shares the sounds and the stories of her beloved city with her radio audience as the host of the show “Street Walk.” At night, she goes home to the love of her life, her fiancé David Kirmani (Naveen Andrews). But everything Erica knows and loves is ripped from her on one terrible night when she and David are ambushed in a random, vicious attack that leaves David dead and Erica close to it.