In a world where hearts are literally transferable and can be swapped between individuals, players assume the role of a detective whose ability to empathize with others allows them to use the hearts of suspects, witnesses, and victims to explore their memories and emotions. Set in a quirky, dystopian city, the detective must solve a series of bizarre crimes that challenge the boundaries of identity and morality. As players navigate through intricate plotlines, they can choose to help, deceive, or even exploit others while uncovering secrets hidden within each heart. With choices that lead to multiple endings, every decision weighs heavily on the heart's true owner.