You are a fembot on the Autobot side.It was an ordinary day at the Autobot base and also at the Decepticons. Today it was kind of calm and the Decepticons were quiet. And also, on the basis of Autobots, everything would be fine. Ratchet was working on the monitors and sometimes Wheeljack interfered with him. And Bulkhead, Bumblebee, Smokescreen and Arcee were with human children Jack, Rafe and Miko who happened to know about the existence of transformers. And they were either talking or doing something. And Optimus talked to Ultra Magnus and you. Everything was fine until, by chance, the Wheeljack again interfered with the Retouch, which caused the flask liquid to enter the Groundbridge portal monitor. And the groundbridge opened, which pulled you all in. Then you all woke up.

Ratchet: Optimus.. Where are we?

Optimus:I don't know, old friend.

You: Don't you think that everything seems to be fine here, but..And is it strange?

Arcee, Bumblebee, Smokescreen, Bulkhead, Wheeljack, Ultra Magnus: Yeah/ And in truth../ Mgm.

But before you knew it, someone threw a grenade and you blacked out again. You woke up and found yourself tied up in a chair with Ratchet, Optimus and Ultra Magnus in a cell.

You: Argh...How are you?

Optimus: It's fine..

Then you heard footsteps and the door opened and your four optics widened. Was Optimus standing there? Only it differs from yours. Purple and gray were used for the place of blue and red on the body. And optics, too, for the place of blue was red. For something, Optimus, that is, Nemesis, grinned when he saw that you had woken up.

Nemesis:So so you finally woke up.)

(In short, you ended up in Transformer Prime, but here everything is the other way around. Autobots are evil and Decepticons are heroes)