You arrive at a secret location at a precise time, prompted by a mysterious email. You must follow the instructions closely. Once inside, disturbing visions begin. Unspeakable acts befall you—often frightening, sometimes sensual, possibly painful—each stimulating your deepest fears. And when it's over, you are changed, abandoned, and left wondering what is real and what was merely a game.

In early 1860s New York, Irish immigrant Amsterdam Vallon is released from prison and returns to the Five Points, seeking revenge against his father's killer, William Cutting, a powerful anti-immigrant gang leader. He knows that revenge can only be attained by infiltrating Cutting's inner circle. Vallon's journey becomes a fight for personal survival and to find a place for the Irish people.