When August Finn rises from the depths of the dark matter research facility where he works, he discovers that the human race has been turned to dust. For August, life becomes one grueling test after another as this man of science must fight to survive. That is, until he makes contact. While much of the world's technology is no longer functional, simple electronics still work, including Ham radios. After a day of trying, his call is finally answered.Hanna Dearborn is alone. She's the last person living on Earth, hidden away in her parent's sophisticated bunker. Gun in hand, she intends to end her life. Then, he calls.Connected to the only other living person in the world, August sets out on a quest to cross the country from Arizona to New Hampshire. As he follows a map from one Ham station to another, he learns how to survive from Hanna. They keep each other alive with each call, forming a deep relationship as he treks through harsh terrain, weather, and...