For a nuclear war, I want to know which cities got hit, where the fallout spread, how people mostly died, then what? Nuclear winter? Crops dying? People starving? Communication problems? Government collapsing? This is an entire show just about the world ending, many seasons long. They could show human conversations and families struggling. Instead of showing post event survival, show pre-event and during event survival. Each week could be the collapse of the next piece of the puzzle.