IN THE YEAR 1979 -- IN A PARALLEL UNIVERSE MUCH LIKE OUR OWN -- AN EXTRA-TERRESTRIAL VIRUS DESCENDS ONTO EARTH FROM ABOVE, TURNING THE ADULT POPULATION INTO GANGRENOUS, SLUG-LIKE CREATURES KNOWN AS GROANERS...
THOSE WHO ARE CHILDREN WHEN THE VIRUS TAKES HOLD ARE IMMUNE. THAT IS UNTIL THEY TURN EIGHTEEN, AT WHICH POINT THEY BECOME SUSCEPTIBLE TO INFECTION...
THOUGH SOME MANAGE TO ELUDE THE DISEASE FOLLOWING THAT PIVOTAL BIRTHDAY, FEW MAKE IT TO SEE TWENTY-ONE...
AND WHILE THERE ARE RUMORS OF ADULT SURVIVORS, MYTHS OF MYSTERIOUS REMEDIES AND VACCINES, NO KNOWN OR RELIABLE CURE IS EVER DISCOVERED...
THE EARTH IS NOW OVERRUN BY CHILDREN...
AND WHAT’S LEFT OF SOCIETY HAS BEEN RENDERED A...