With humanity locked in a brutal war against the Transformers and Optimus Prime missing, the key to Earth’s survival lies hidden in the past. Buried within the secret history of the Transformers on Earth is the answer to saving the future. Now, an unexpected team—Cade Yeager, Bumblebee, an English Lord, and an Oxford Professor—must join forces to uncover the truth. As the battle for the planet escalates, they must race against time to prevent total annihilation.