The world is ending in five years, and humanity's solution is a mass exodus to the past. What could go wrong?

Renee's job for Serendipity is simple: she relocates families to the past so they don't die when the asteroid hits Earth in five years. On top of a paycheck, she earns her own time travel slot to escape the end of the world. Everyone wins.

But then Beckham shows up in her office, claiming she sent him from the past to find her. On top of that, he wants her help taking Serendipity down. As much as she likes the idea of sticking it to some of her bosses, she also really likes the idea of being alive after the Earth is destroyed.

But as Beckham spills more secrets about the dangers of time travel, Renee is forced to decide between securing her own happy ending and preserving thousands of others.