Casper, an eager and enthusiastic Time Traveler, arrives in our present with a plan... just not a great one. Hooking up with Holly, a jaded 20-something, he offers her a life free of responsibility or consequence in exchange for her help setting up his life. He takes up residence in a bomb shelter, where he conducts strange experiments with radiation.

Casper and Holly must figure out what they mean to each other and the world around them. Will they save the future, or do they have to change it?