A CIA black ops team of the highest calibre and a bounty hunter are on a quest for Autobots, a group of robots from the planet Cybertron. They seek assistance from a struggling inventor and his daughter.
After brainwashing Optimus Prime, Quintessa travels to Earth in pursuit of an old staff. A race against time is waged by Cade, Bumblebee, and the Autobots to locate it while avoiding an anti-Transformers force.
Sam departs from the Autobots to pursue a regular life. He is pursued by the Decepticons, who then draw him back into the conflict between the Transformers.
Before the Decepticons can use a Cybertronian spacecraft buried on the Moon for their sinister plans, Sam Witwicky and the Autobots must discover its secrets.
Two alien robot species, the honourable Autobots and Decepticons, crash land on Earth. They fight over Sam’s possession of Allspark, the ultimate power source.
The Autobots and Optimus Prime take on their toughest test yet. They must cooperate with a strong Transformers group known as the Maximals to defend Earth as a new threat that might wipe out the entire planet appears.
Optimus Prime sent Autobot scout B-127 to Earth during the Cybertron Civil War to establish a base where they could reassemble. The scout later befriends Charlie, who gives him the moniker Bumblebee.