Transformers: The Battle Of Optimus Prime: Book 4

An original adventured inspired by the hit TV series!

When a maximum-security prison ship crashes on earth, Cyberton's most-wanted criminals escape. Now all that stands between Earth and the deadly Decepticons is a crack team of Autobot heroes - the Robots in Disguise!

Optimus Prime has always been Bumblebee's mentor. But recently the two autobots can't seem to agree.
Little do they know they're being tested by Liege Maximo - and he'll stop at nothing until Optimus and Bumblebee destroy each other! Will this be the end of the autobots?