In a world where emotional intelligence can be transferred between hearts, you play as a skilled 'Heartsmith'—a mercenary who specializes in trading and manipulating emotions to resolve conflicts or gain power. One day, you awaken to find your own heart has been stolen, thrown into a city-wide black market of emotions. As you navigate through a web of interlocking stories, betrayal, and secrets, you must ally with a cast of bizarre characters (an anxious inventor, a cynical poet, and a heartbroken spy) to reclaim your heart. Choices you make will alter emotional repercussions across the city, leading to unexpected alliances or devastating outcomes, crafting a unique narrative tailored to your decisions.