Great Scott! Marty McFly's woken up to a present where Hill Valley has been enslaved by the Decepticons! And not only that, but when a time machine arrives from the future to help, Marty finds out that Doc Brown isn't the only one with a flux capacitor... Gigawatt, an Autobot, has one built in! To discover the secrets of his present, Marty will have to trust this mysterious stranger on a trip... to the future!