In a world where hearts can be swapped like collectibles, you play as an aspiring artist in a bustling city who accidentally acquires a heart from a mysterious stranger. You soon learn that this heart possesses the memories and emotions of its last owner—a renowned but enigmatic musician who disappeared under suspicious circumstances. As you navigate through a series of encounters with diverse characters, each tied to the musician and their heart, you must make choices that alter relationships, unveil secrets, and ultimately discover the truth behind the heart's legacy. Interactive choices lead to multiple endings, from a triumphant reunion with the musician or a scandalous betrayal that shakes the city to its core.