In a world where people can physically exchange hearts to take on each other's emotions, you play as Katy, a budding 'Heart Broker' in a city teetering on the edge of emotional chaos. After a mysterious heart exchange goes awry and causes a wave of emotional turmoil, you must navigate through intricate relationships, choosing whether to help others or to profit from their suffering. Each decision not only shapes the lives of others but could change your own heart forever. Will you restore balance or plunge the city into an emotional dark age?