In 2257, a taxi driver is unintentionally given the task of saving a young girl who is part of the key that will ensure the survival of humanity.
A spirited young bride-to-be living with her single mother on a small Greek island secretly invites three of her mother's ex-boyfriends in hope of finding her biological father to walk her down the aisle.
Humans and Transformers are at war. 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. Saving our world falls upon the shoulders of an unlikely alliance: Cade Yeager; Bumblebee; an English Lord; and an Oxford Professor.
