In 'Hello, Goodbye', you play as an insomniac writer named Max, who discovers a peculiar chat program that lets users communicate with their past selves. As Max navigates through heartfelt conversations, scathing advice, and hilariously misguided predicaments, he learns that every decision can ripple through time. You must choose wisely as you rewrite your fate, avoid disastrous outcomes, and ultimately confront the demons of your past—all while fighting the urge to delete the app and go back to sleep.