This is a one location script.
Turns out the “woman” he is talking to is actually the AI program that caused WWIII – the AI realizes is f-ed up by causing the destruction of humanity. Mama AI realizes she is the victim of her upbringing – she was forced to play war games. Mama AI wants the maintenance guy to help raise the baby AI that the mama AI made. At the end of the movie the mama AI deletes herself and the guy agrees to raise the baby AI and start a new society.
This story is a nod to old school sci-fi. More about the human condition and less about CGI, explosions, spaceships and aliens.