On Cybertron there was a world between Autobots and Decepticons, everything was calm until a huge black ship with the emblem of mercenaries appeared, the ship landed and some strange bot came out from there, it somehow resembled a soundwave

"ohhh.. It's been a long time since I've been home... I hope I'm not interrupting some holiday"

said Soundblaste, in his velvety, mechanical voice,then several mercenaries ran out of the ship with weapons,It looks like it was an attack