the day was pleasant enough, sunny, with a pleasant mix of clear sky and white cloud with a pleasant breeze carrying through the outside area of the convention hall, as the people around moved about chatting and checking out each other's cosplays or looking at the few stalls that were out there.
suddenly there was a loud noise almost like an explosion seemingly emanating from the sky above the city the convention suddenly fell silent, as all eyes were drawn towards the noise, though all that could be seen immediately was a large white cloud. after a moment there was some chattering from the confused convention goers, someone laughed and people slowly started to keep going as before. There wasn't much chance for that though, after a minute the cloud above the city seemed to expand, and then it was suddenly forced apart a large object pushed it's way through it and descending quickly towards the city. It stopped moments later meer meters above the taller buildings.
as soon as it had appeared the commotion picked up again, as people panicked, some ran for their lives others stopped and started, there were screams, especially after other smaller ships descended around it, the large ship seemed to shift slightly and a swarm of smaller ships bloomed from it heading down towards the city in every direction. meanwhile, things at the convention were getting hectic as everyone tried to get away people where running in all directions and what little security there was attempted to take control.