In a world where hearts are physical objects that can be swapped, stolen, and traded, players take on the role of a heart dealer who specializes in the black market of hearts. Players navigate a morally ambiguous city where people's emotions are tied to their hearts. As they uncover a conspiracy involving stolen hearts from powerful figures, they must choose whom to ally with and whom to betray while balancing personal desires and the consequences of their choices. Every decision influences the fate of the city and the emotional state of its characters, leading to multiple endings based on how well players understand the intricacies of human emotion and deception.