Step into the shoes of Aria, a talented but struggling heart surgeon who wakes up one day to find her own heart mysteriously replaced with that of a patient who died during surgery. As her newfound heart drives her emotions and impulses into overdrive, Aria must navigate a web of dark secrets involving her hospital, uncovering the truth behind the heart's origins. Each decision she makes influences not only her psychological state but also the lives around her, leading to multiple branching paths and outcomes. Will you follow your head or your heart?