Proverbs are a good source of basic plot ideas which can be expanded out. Add in the What If principle to develop that basic idea.
Gain or Loss?
Look at what your characters have to gain or lose. Is that motivation strong enough for the plot you’ve got in mind?
Raise your characters’ problems, ambitions, ensure there is enough tension in your story. You do want to make a drama out of a crisis! (Without overdoing it of course!)
Consider politics! Whatever your fictional world, it will come into play. How does it affect the ruling classes? The peasants? How did the politics come about? Is there gender equality? Freedom of belief and/or speech? Are broadcasters, journalists or their equivalent free to report as they like or are they subject to controls and who operates those?