You know the future that people in the fifties imagined we'd have? Flying cars, food pills and moon bases? Well, it happened. And it's just as great as we hoped it would be. Except, in this world, a series of heartbreaks leaves Tom alone. So he hijacks his father's time machine, and goes back to where it all began - the moment when the world as we know it, and the world as Tom lives it, parted ways, due to a ground-breaking experiment.
Only, thanks to Tom's accidental intrusion, the experiment fails and he returns 'home' to find his world erased and replaced with our own 2016 - by comparison, a chaotic mess. In our world, however, Tom discovers vastly improved versions of his family, his career, and - best of all - his soulmate, Penny. So. Should he fix the flow of history, bringing back into existence his old utopian reality, or try to forge a new life in our messy one?