In a world where souls can be exchanged like Pokémon cards, you play as a heart collector who accidentally acquires the heart of a notorious criminal. As you navigate a whimsical yet dangerous city full of eccentric characters and hidden agendas, you must uncover the identity of the criminal while avoiding capture yourself. Players will engage in a series of dialogue choices, mini-games, and moral dilemmas, influencing the ultimate fate of their character and the heart they carry. The game explores themes of identity and morality against the backdrop of a vibrant, ever-changing cityscape.