As You all know, autobots and decepticons can't get along.
The argument changed into the war. The war with no winner. Autobots have defeated decepticons for so many years but decepticons still keep on fighting.
For now was truce. Megatron thought of the plan to destroy Optimus once and for all. Then Shockwave walked in. "I need to speak to you instandly!" he said. Megatron sighed and asked:" What is important to run into here when i'm thinking of the plan?" Shockwave told him:" It's some of the decepticons. When You told them to spy on autobots then they came back but they weren't themselves. And they were glowing purple." Megatron found that interesting. At the same time with autobots...
Bumblebee ran into Optimus' room. There he said:" We got trouble, sir!" Optimus turned into him and asked:" What trouble, my friend?" Bumblebee told that same thing what Shockwave told Megatron. That made Optimus concern.
He walked to Ratchet to see his autobot friends. There was three mad autobots: Blurr, Cliffjumper and Sunstreaker. They all were with same symptoms as some of decepticons. Ratchet was with worried impression. "They all were shot by something," he said:" I don't know what though but something very bad." Optimus put his hand on Ratchet's shoulder and said:" Try to help them. Do the best you can." Ratchet nogged.
At the time Soundwave's drone met up with some kind of spaceship that looked like a planet. There it saw a purple female alien robot. She was like decepticons but with blue eyes. In her hand was like dark energon but the drone wasn't able to intentivie it as the dark energon. On her back was like crystal cape and on the head was a crown made of same metal as her. She may have looked like decepticon but drone knew that she wasn't that. "New race!" the drone messinged Soundwave.
And that was last time when drone was seen because it was shoot down.