Pretty awful end-of-the-world drama. Survivors of a nuclear exchange hide in a mansion in the mountains, fighting off a mutant and each other. It was so lame it really couldn't even be enjoyed on an Ed Wood camp level. It you want a smart end-of-the world film from roughly the same era, "The World, the Flesh and the Devil". Or if you want a modern end-of-the-world film that's absolutely terrifying, watch "The Divide". Or for a clever modern low-budget effort, watch "Right at Your Door", though that one is a disease outbreak scenario.