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In the near future where Android (A.I) becomes common among humans, a virus outbreak suddenly occurred, turning over 70% humanity into zombie-like "Creatures". The A.I soon break away from their infected owners since they're not programmed to recognize "Creatures" as humans, but one of them, the housekeeper Hasty, acted otherwise when her infected young master, Neville's final words struck something in her. Sticking with him after all other humans have been infected in the area they're living in, Hasty vows to do whatever it takes to cure master Neville, even if she has to fight against the whole world who's now looking to exterminate all Creatures to cut off the infection source completely.