Lothryn was raised to believe the world has fallen victim to a zombie apocalypse. He's never been outside and speaks a made-up language. Hannah's a college student who can't decide on majoring in linguistics or psychology. One day they met.
Nick and Amy have a great life - they live together, play together, and have just planned their European trip for the summer. On the first leg of their trip, they set off to Bucharest, Romania. On one of their guided tours, they break off from the pack and soon discover that everyone has mysteriously vanished without...