This takes place some months after the events of DoTM - so yes, there are or will be spoilers in it.
And as usual, I own none of the well known characters, only Solaris. And who is that? Well, you will have to wait and see, wont you? ;)
Solaris.
Prologue..
When Cybertron was space bridged closer to the Earth it played merry Hell with the gravitational fields. For weeks afterwards the Earth was shaken by earthquakes, tsunamis ripped across seas that were as turbulent as the weather above them and volcanoes echoed the violent tides of the liquid rock beneath them. Every creature on the planet felt the effects of those fateful few minutes and for the apparently dominant species, mankind, the social and political upheaval was just as devastating. Recovery efforts were hampered by the political jockeying that was being done, endless arguments and debates about the pitifully few remaining Cybertronians getting in the way of constructive effort, as though those in charge would prefer to nit-pick useless might-have-beens instead of coming together to help those most closely affected by the devastation in Chicago.
But the Earth was not the only thing affected. The whole solar system teetered on the brink of destruction, even if the humans did not know it. Gravity is a powerful, yet fragile thing, and the cosmic dance every planet around our sun performed had been touched by that brief introduction of another planet. Minute changes in their courses occurred.
The moon tilted.
A part of our satellite that had never before known the fiery light of our sun was suddenly illuminated. That light fell not just on sterile lunar dust and rock, but also upon something that glinted in the unexpected light. Something that had a form that was becoming more and more familiar to the people of earth. As the light bathed the inert form an echoing glow seemed to slowly light it from within also. Gradually systems that had remained dormant for decades fired up as the passive solar radiation fuelled and woke the solitary figure. Awareness came and with it came the need to seek knowledge. While still gathering the strength to rise the figure reached out beyond and started to listen in to the radio waves that blanketed the nearby planet, learning and assimilating data. Time passed but it meant very little. There was only the learning and absorption of the life-giving sunlight. When all was well the figure stood, shaking lunar dust free of its almost delicate looking frame, and a finely sculpted cranial unit lifted to allow the optics to view the blue globe that hung nearby. Crouching slightly the figure dug toe-claws into the rock, and then in a shockingly sudden move leapt skywards. The initial propulsion was enough to take it beyond the moon's meagre gravity. Not so long later the Earth's gravity took over, and by then the figure had folded into a cometary form and was well prepared for the searing temperatures of re-entry.
Nobody was out in the punishing midday heat of the Arizona desert to see the meteor crash to earth. Seismic detectors picked up the impact, but by the time the investigators got there the hole was empty.