Jack and Lucy were unescorted minors, traveling alone through the Atlanta airport, when terrorists attacked the city.
The teens are resourceful, but that will only get them so far. Paired with a group of survivors, they face exposure to radiation, being burned to death, or being trapped forever in the catacombs under the world's busiest airport.
Not knowing if his children are alive or dead, the teen's father, David, fights the weight of uncertainty, as he struggles with the consequences from the greater attack happening all around America. Desperate to know the fate of his children, David's path intersects with another orphan of the attack. He must choose between the risks of going after his own children, or helping this young girl find her family.
Come along as everyday people fight to survive in this new reality, a reality known as Collapsing World.