A young woman, Anna, walks the streets of a foreign city, her mind full of pain, no memory of who she is...and plagued by nightmarish visions. She soon meets Morgan, a man who also has no memory. Forced to trust one another, the two feel a mysterious connection: a powerful energy that bonds the two strangers together. Unbeknownst to them, their every action is being guided by unseen forces from the dark underground shadows of the city; they are part of a frightening experiment with a terrifying and shocking conclusion.