Transformers Prime: The Fifteenth Prime

The Autobots are all but extinct, Cybertron is lost, and the Decepticons have left Cybertron in the hopes of finding a new world to rule. Optimus and his team have taken refuge on Earth, fighting, surviving, building friendships. A new team of Autobots gets Optimus' message after the apparent fall of Megatron and follow it to Earth. They had hoped to find him and aide in the battle against the 'Cons. But they quickly learn that they must adapt to Human customs and laws while remaining "Robots in Disguise". The task may prove too difficult for the new arrivals. But they carried an important secret, and a face familiar to both Optimus and Ratchet.

Any Designs from this story are either owned by Hasbro or their original creators/designers. Credit will be given to them should you wish to go look them up. Enjoy :-D