In a bizarre twist of fate following a freak accident at a medical conference, you, a dull but ambitious cardiologist, find yourself possessing the hearts of various patients. Each heart belongs to a different person with their own life stories, secrets, and unfinished business. As you navigate their memories and relationships, you must make choices that affect their lives—and your own. Can you reconcile their regrets while seeking the meaning of your existence? Or will you become a heartless ghost in their world of drama and chaos?