The Primes

The War for Cybertron took a heavy toll, with the Autobots barely defeating the Decepticons and the All Spark being split and sent to the stars.
Ultra Magnus and some key lieutenants were left commanding Cybertron, while Optimus Prime, and his children, searching for the All Spark. After Steller Cycles of silence, most, if not all, were declared off-line.
Then a portion the All Spark was found by a low ranking Autobot survey team and it took them to a small unknown planet called Earth, where they were followed by the Decepticons and, after a battle, the portion of the All Spark was destroyed, leaving Hot Rod and his team to answer to the Elite Guard.
But soon, they all find out that the Autobot-Decepticon war has reached this planet before.
Mix & Mash of TFA, Aligned, Bayverse, Beeverse and Cyberverse