It's A. D. 2025. The world's population lives underground in small factories called "Tanks". They are making complex robots to fight world War 111.
Information about the war effort comes from a few brave politicians chancing their lives on the highly radioactive surface.
What the few brave politicians forget to mention is that the war finished ten years ago. And the robots make great servants on their thousand-acre estates.
What they do mention is that anyone who comes to the surface will die instantly and horribly from the enemy's bacteria.
If you think mankind is too advanced for this kind of medieval oppression, read The Penultimate Truth.
Star Trek The Next Generation