Disclaimer: I don't own Blizzard Entertainment.
Note: I hope that you understand the plot. I'd be perfectly willing to explain it to you if you want.
Arcturus Mengsk wondered if he had done the right thing. It would be pretty easy to write off Kerrigan as having been a traitor, but a lot of people would side with Raynor. It would take a lot of propaganda to cover up the disappearance of half of the fleet. That probably wasn't going to happen, though. Magistrate Macdonald was still in charge, and he still seemed to be on the Dominion's side. If only he would hurry up... Mengsk had been waiting for nearly a quarter of an hour for the Magistrate to show up. Surely it shouldn't be taking this long. Maybe one of the lifts was broken.
The door at the end of the room opened, and Macdonald strode in. He looked unusually cheerful. He greeted Mengsk with a salute, then sat down in one of the Emperor's leather chairs. He helped himself to a cigar. Mengsk frowned.
"Have you apprehended Raynor and his little band of traitors?" Mengsk watched with disgust as the Magistrate tapped the ashes off of the end of his cigar onto the table. He took a long puff, then said:
"Au contraire, Emperor. I really didn't like how you let all of those Sarans die for your own amusement. So... I gave Raynor complete control of the Saran Navy, to do with as he wishes. I'm too old to lead a rebellion against a rebellion," He laughed heartily, then extracted his ancient pearl-handled six-shooter. "I think that I might as well have some fun before I die." His expression changed from joyous to somber.
"What do you mean? You just gave him everything? But... I thought you were with us!" The Magistrate shook his head, then leveled the gun at Mengsk's forehead. The two guards at the door jumped into action, trying to wrestle the pistol from the old man, but he was too fast. Each guard received a bullet in the heart. Macdonald turned around and pointed the gun at Mengsk again.
"No... you wouldn't! You-" Macdonald shot, yet aimed with such care that the bullet missed Mengsk's head entirely, smashing the window behind him. The computer tried to compensate for the rapid loss of pressure, but wasn't fast enough. Mengsk, Macdonald, and the corpses of the two guards flew out of the window. Macdonald's head smashed against the wall of the building next door and was liquefied. The two guards fell to the earth, where they landed in the street and caused an accident. Mengsk flew straight into the window of the skyscraper next door and landed among a number of very confused computer programmers. He broke his hip.
Author's Note: The 'you' character of the Terran campaign never makes another appearance. He could have died... I'm also making the assumption that the skyscrapers in Augustgrad are tall enough to have Goldfinger-style rapid decompression.