There was this old barn that your father had. You never went in it until recently. The barn itself was really warn down, the red paint completely faded and chipped. Part of the roof was gone but somehow all the walls were intact. There was dust and dirt everywhere. It seemed to just full of crap, which was problem the reason why you never came in here. There was never any reason to.
In the back of the barn though was something big partly covered by some cloth or blanket. Once it was removed, it was relieved that under it was the front of a semi truck, no trailer with it. It was very damaged and worn down. Incredibly dirty as well. In the grills at the front was a missile. You deiced to inspect that but when you did, it went off and flew around the barn.
Only for it to come back and hit the truck once again. It fell to the floor and nothing happened for a few moments. That was until the truck transformed into an almost 40 feet tall robot, his arm forming into a gun and pointing it at you.
"Human! Don't come any closer, I will kill you!" Optimus coughed a bit, feeling the damages to himself.