In a world where the heart dictates your fate, you play as a BioMismatch Artist, a rogue heart-transplanter who swaps hearts between people like trading cards to fix emotional ailments and instantaneously change their lives. As you navigate through a sprawling city, meet a cast of quirky individuals, each with their own unique stories and problems, you must choose whose heart to change for the greater good (or your own twisted amusement). But beware—while you can mend their pain, you may also unleash chaos and unintended consequences. With each decision you make, see your moral compass tested as you explore themes of love, loss, and identity, while engaging in dynamic dialogue that forces you to confront what it truly means to have a 'heart'.