In 2145, a strange "red rain" suddenly swept across the world. Rain is not a natural phenomenon, but a "data flow attack" from an unknown civilization on the edge of the solar system - the alien code carried by the scarlet rainwater crazily rewrites the rules of geophysics. Urban buildings are accelerating decay due to corrosion. Ordinary humans will quickly fester into slime after contact, and the civilized order will collapse within 72 hours.
