They needed to keep moving, but they were exhausted. Tiredness crept up through their bones, and although their minds fought to stay awake, they fell one by one to the ground, too exhausted to go further. Nobody knows why. Nobody knows where they were going, or who they were. They just appeared out of nowhere. They disappeared just as quickly. It made us all question why they were so exhausted, and where they went. They were dead when we found them, but nobody knew why. Nobody knew how they got into that condition.

Nobody knew anything, and nobody does now.