M3GAN: A robotics engineer at a toy company builds a life-like doll that begins to take on a life of its own. M3GAN 2.0: Two years after M3GAN's rampage, her creator, Gemma, resorts to resurrecting her infamous creation in order to take down Amelia, the military-grade weapon who was built by a defense contractor who stole M3GAN's underlying tech.