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.
To put their demons to rest once and for all, Josh Lambert and a college-aged Dalton Lambert must go deeper into The Further than ever before, facing their family's dark past and a host of new and more horrifying terrors that lurk behind the red door.
Since his wife's death, Victor has raised his daughter Angela alone. After she and her friend return from a three-day disappearance with missing memories, they begin displaying frightening behavior reminiscent of the MacNeil possession fifty years prior.
