Gray Tide

A gray rain fell from the sky, and that rain changed the world. Zombies emerged from the gray rain, civilization collapsed like towers of sand, and law and order evaporated in a matter of weeks. He was secretly sent to an underground research base and stuffed into a sealed cabin. Researchers told him his blood could become a vaccine that could save humanity. Three months later he woke up from the sealed cabin and the base was empty. The world has changed. He took away the vaccine, the original solution, and a question. He refused to accept that the world was ending.