Colonel David Gath is an aging astronaut on his last expedition to the International Space Station. Drinking too much amidst bouts of depression, he was no-one's first choice; he was a replacement of a replacement. After learning the United States has been attacked with a weaponized prion disease, Gath is asked by the Commander to bring an experimental vaccine from the Station to Earth. When the Commander is murdered, Gath convinces the multinational crew to join him on his mission to save a country that is not their own. As they cross a devastated land, facing violent infected, mercenaries, and a traitor determined to see them dead, Gath is haunted by the fear he may have led his crew to their deaths based on a lie. Set in the near future, 'On Nothing Hangs the Earth' is the first in a series of post-apocalyptic thrillers that add a new flavor to the traditional dystopian genre as astronauts from six countries work together to try and save the United States from extinction.