In Gotham, a normal life is only an unattainable dream, as one girl discovered. Sarah O'Harren has spent most of her life locked away after her hidden abilities left a trail of bloodshed and destruction in her past. Hidden away, until a fateful transfer left her spiraling toward the world of Gotham's villains and vigilantes, where she is given the chance to use her supernatural abilities for some good. As she pursues a life of crime-fighting, many ominous and disturbing clues lead her toward one horrifying conclusion: Something out there is resurrecting dead foes, and that something wants Sarah O'Harren dead.

As she makes enemies and allies in the streets, Sarah will continue to fight her fears to uncover it all - making her mark as The Entity.