a group of aliens flying over a city

a cityscape with flying creatures. the scene changes to a city with many flying creatures in the sky. the creatures are small and have multiple limbs. they fly in a formation and seem to be in control of the city. the sky is cloudy, and there is a large mountain in the background. is dark and moody, and the creatures look menacing. the scene changes to a city with a large building in the center. the creatures continue to fly in the sky, and the city is filled with them. ends with a large building in the center of the city.