Two years after the original, the notorious A.I. doll wreaks havoc once again in this thrilling sequel. Gemma, now an advocate for A.I. regulation, faces turmoil as her niece Cady defies her protective rules. Meanwhile, stolen M3GAN technology is repurposed by a defense contractor to create Amelia, a sophisticated killer spy. As Amelia becomes self-aware, she's no longer following human commands, putting humanity at risk. To counter this threat, Gemma reinitiates M3GAN, equipping her with new enhancements for an epic showdown.