The murderous doll who wowed the world is back. Two years after M3GAN, a marvel of artificial intelligence, went rogue on her violent - and impeccably choreographed - rampage and was destroyed, her stolen tech is misused to create a weapon known as Amelia. With humanity on the line, M3GAN is resurrected and given a few upgrades. As their paths collide, the original AI queen bee is about to meet her match.