The weather forecast said it would rain today, but no one said it would be the color of blood.
When the first scarlet raindrop hit the glass of the office building, Lin Mo thought someone had thrown the paint as a prank. Until the whole sky was dyed red, until the first scream came from downstairs. 72 Hours later, the city turned into a hell - the concrete was melting, the tap water was boiling, and those who had been exposed to the rain turned into monsters with peeling skin and crazy bloodthirsty.
Lin Mo, who was trapped in the office on the 30th floor, watched helplessly as his colleagues mutated one by one. He had to smash his boss's head with a printer, use a fire ax to split open filing cabinets that blocked the door, and climb in a power-off elevator shaft just to reach the convenience store on the first floor. There was food, clean water, and the girl at the front desk he'd had a crush on for two years... If she was still alive.
But the most terrifying thing is not the bloody corpses, but the surviving humans. When Lin Mo discovered that his wounds could heal quickly, he became a "mobile blood bank" that all forces competed for. Some people want to dissect him to study antibodies, and some want to keep him in captivity as a permanent donor. In this fallen city, he must learn one thing: trust is more deadly than rain.
