A viral epidemic has eliminated 90% of the world's population. Those that are immune to the deadly disease struggle to survive in a dangerous post-apocalyptic world where murderous scavengers run wild. The only technology that still works are the pilotless drones originally designed to deliver vaccinations for the lethal disease. Amongst the survivors is a 16-year-old boy named Kitch, who stumbles across a drone that is different from any he has ever seen before. He takes to the road, following the mysterious drone across a desolate and dangerous world, in the hope that it holds the secret to the survival of the human race.