Transformers Prime: Shattered Glass

During the episode Rock Bottom, Megatron and Arcee needed to help each other escape the cave in, Megatron was able to get a hold of Soundwave through the comm links and he was able to get a groundbridge out of there. Arcee was able to do the same thing with Ratchet. However, both groundbridges came to them at the same time and when the warlord and autobot went through their respective groundbridges, it transported both of them to an alternative dimension where the Autobots are the bad guys and the Decepticons are the good guys. In this dimension, Optimus wasn't himself. He was known as Nemesis Prime. When he got too cruel, the Autobots betrayed him and they created an alliance with the Decepticons to help take down Nemesis Prime. Now not only do Megatron and Arcee have to help each other get back to their real world, they have to help the Autobots and Decepticons in this world get Optimus Prime back. Will they be able to help Optimus? Or will it be too late to save the once noble, and kind Prime they once knew?