It gets you with quiet. No score swelling, no monster reveal, just parents glancing at a monitor and finding their kid crouched in dog skin, face hidden, and deciding the real problem is that he can't go to school like that. That's the horror here: not the robot, but the fact that Auto Mommy was mail ordered and nobody ever thought twice about it, and that the order to peel the skin off comes from the people who should have been in the room. The final image of what's underneath, a child grown into something with no human face left, lands with zero fanfare and doesn't leave. Some viewers bail early because it refuses to raise its voice. The ones who stay end up carrying it around for years, arguing that this thing deserved an audience it never got.
Parents who have no wish to care for their child leave the job to Auto Mommy, a robot bought by mail order, and let the child be raised alone. One day they check the monitor and see the child dressed in dog skin with his face hidden. Worried that they cannot send him to school like that, they have Auto Mommy strip the skin away, and what they find underneath is a child who has become a plant with no human face. The film is a surreal fantasy about parents handing child-rearing over to a machine.