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.
Home for a visit, Henry finds a love letter written in high school for best friend Claire. Still in love with her, he decides to finally share the letter only to find it's missing and in the hands of Claire's new boyfriend.
