In my experience, characters is key. Their motivations, desires and goals drive the story, and without them, it stops.
You have outlined a very basic story, one that is easy to write but which might run out of steam because the morals are so black and white. How about you introduce some kind of human drama? Maybe there are conflicting ideas on how to fight the Zerg? Maybe some of them are based on petty grudges?
When this becomes the first custom-made campaign to win an Oscar, you're going to eat your "OK".
In my experience, characters is key. Their motivations, desires and goals drive the story, and without them, it stops.
You have outlined a very basic story, one that is easy to write but which might run out of steam because the morals are so black and white. How about you introduce some kind of human drama? Maybe there are conflicting ideas on how to fight the Zerg? Maybe some of them are based on petty grudges?