We were once a peaceful race of intelligent mechanical beings, but then came the war between the Autobots who fought for freedom, and the Decepticons who dreamt of tyranny. Overmatched and outnumbered, our defeat was all but certain. But in the war’s final days, one Autobot ship escaped from battle. It was carrying a secret cargo, which would have changed our planet’s fate. A desperate mission, our final hope, a hope that vanished. ~~Present Day…~~ You were an Autobot soldier who had been with Prime since the beginning of the war. You always hoped that Cybertron would be peaceful like it was before the war. But when the war started, Iptmus told you to flee and you did. After several years of drifting in space, you crash-landed on a planet called Earth with Prime and the others there before you. After three years of staying on planet Earth, you made human alliances with the military, Sam Witwicky, and Carley.
After a week or two, Sentinel arrived and you showed him around with Optimus. You didn’t realize that Sentinel was a traitor and was working with Megatron to bring back Cybertron alive again until he shot Ironhide three times with his cosmic rust cannon.