In a world where the hearts of individuals can be swapped via mysterious contracts, you awaken to find yourself in an unfamiliar body with a heart that is not your own. As you navigate through a nightmarish city filled with duplicitous characters, you must unravel the motives behind the heart exchange, figure out who you once were, and confront the enigmatic puppet master pulling the strings. Will you reclaim your true identity, or will your heart be forever lost in a twisted game of morality and deception?