Caisey is a girl with a secret even she doesn't know. She leads a quiet college life, until she is kidnapped and forced to make a decision that will either save or destroy her world. Solus is a demon bent on revenge. Torn between his lost humanity and the dark power within him, he must choose between his thirst for violence and his desire to free his soul. Together they must escape through a series of circles, each filled with a different set of horrors, where they discover that their choices carry one hell of a consequence...