In a world where organ transplants cause people's personalities to shift, you play as a detective who has recently undergone a heart transplant. As you grapple with how the heart's original owner (now deceased) seemed to affect your thoughts and emotions, you embark on a journey to uncover the truth behind this mysterious phenomenon. Encounter vivid characters, solve morally complex puzzles, and piece together the past of your donor, revealing a web of secrets that binds you both. The stakes escalate as you realize other recipients begin to exhibit similar changes—each impacted by their new hearts. Can you unravel the dark truth before losing your sense of self entirely?