Robbed of his birthright, Arthur comes up the hard way in the back alleys of the city. But once he pulls the sword from the stone, he is forced to acknowledge his true legacy – whether he likes it or not.
Autobots and Decepticons are at war, with humans on the sidelines. Optimus Prime is gone. The key to saving our future lies buried in the secrets of the past, in the hidden history of Transformers on Earth.