A cloud
The plane kept flying higher and higher as it reached its maximum altitude. Now all they had to do was just keep flying straight and keep it all on track. They were out of the storm and now it was just a clear night sky. The pilot was enjoying himself, looking at all the stars.

As he was flying he saw something that appeared out of nowhere. There was a single cloud that seemed to be coming right for them. The pilots had no idea how to diverge or avoid it. Usually, they could just swerve out of the way, but this cloud was different, it was almost like it was alive.
