In a world where people's hearts are physical objects that can be exchanged, stolen, or traded, players take on the role of an unassuming heart-seller who has unwittingly come into possession of a heart imbued with immense power. As rival factions and heart hunters close in, players must negotiate deals, navigate complex relationships, and make tough moral choices that will determine the fate of the heart and the future of the city. Each decision shapes the story and influences the characters' destinies, leading to multiple possible endings that reflect the player's journey and ethical stance.