Battle of the Primes is where The Autobots prepare to fight the evil clone of Optimus Prime.
The Clone of Optimus Prime started to lead Darth Grievous's Sith Legion through the streets of Autobot city on Ryloth and Mandalore enslaving the population. The Autobots used the Starscream clone to spy on the Clone for any weaknesses but the real Optimus Prime chose to attack the clone in a one on one brawl to the finish. Optimus Prime leads a group of Autobot Cars to attack the Sith Legion and the Seekers that are controlling the city. In Truck mode Optimus killed many sith lords and in robot mode Optimus had more Seeker Jets destroyed. Finally upon seeing Nemesis Prime the two Primes had a long fight against each other and the two Truck Robots had kicked each other, throw objects at each other, punch each other and finally shoot at each other. The Optimus Prime Clone ordered a retreat to the Outer Rim territories thus allowing Optimus, the Protectobots and his car group to free Autobot City. Meanwhile Darth Grievous was resting in his Chrysalis to recover from the damage he got from defeating 10 Jedi.
|Autobot and Jedi||Darth Grievous's Sith Legion|
The Battle of Autobot City in this timeline is similar to the Battle of Autobot City in the Transformers Movie only this time nobody got seriously injured or died.