The murderous doll who captivated pop culture in 2023 is back. And this time she’s not alone.

The original creative team behind that phenomenon—led by horror titans James Wan for Atomic Monster, Jason Blum for Blumhouse and director Gerard Johnstone—reboot an all-new wild chapter in A.I. mayhem with M3GAN 2.0.

Two years after M3GAN, a marvel of artificial intelligence, went rogue and embarked on a murderous (and impeccably choreographed) rampage and was subsequently destroyed, M3GAN’s creator Gemma (Allison Williams) has become a high-profile author and advocate for government oversight of A.I. Meanwhile, Gemma’s niece Cady (Violet McGraw), now 14, has become a teenager, rebelling against Gemma’s overprotective rules.

Unbeknownst to them, the underlying tech for M3GAN has been stolen and misused by a powerful defense contractor to create a military-grade weapon known as Amelia, the ultimate killer infiltration spy. But as Amelia’s self-awareness increases,...