A brilliant toy company roboticist uses artificial intelligence to develop M3GAN, a life-like doll programmed to emotionally bond with her newly orphaned niece. But when the doll's programming works too well, she becomes overprotective of her new friend with terrifying results.
In an alternate world, humanity and vampires have warred for centuries. After the last Vampire War, the veteran Warrior Priest lives in obscurity with other humans inside one of the Church's walled cities. When the Priest's niece is kidnapped by vampires, the Priest breaks his vows to hunt them down. He is accompanied by the niece's boyfriend, who is a wasteland sheriff, and a former Warrior Priestess.