The homeworld of the Maximals, a sophisticated race of Transformers with beast modes, comes under assault from the planet-eating darkish god Unicron. The Terrorcons, heralds of Unicron led by way of Scourge, are looking to obtain for or her master the Maximals’ greatest piece of generation, the Transwarp Key, that could open portals through area and time to other planets. The Maximal chief Apelinq sacrifices himself to permit the alternative Maximals to escape the planet before Unicron devours it. Now under the command of Optimus Primal, the Maximals use the important thing to flee to Earth.
In 1994 Brooklyn, ex-America Navy electronics professional Noah Diaz struggles to discover a task to help his unwell brother, Kris and is convinced with the aid of his buddy Reek to scouse borrow a Porsche 911 to promote, best to find out that the auto is the Autobot Mirage in disguise. Concurrently, museum intern Elena Wallace studies an ancient statue of a falcon bearing the Maximal image and by accident breaks it open to expose the Transwarp Key hidden internally. The key releases a secret strength pulse which is detected by means of Autobot leader Optimus High, who summons the opposite Autobots. Mirage is contacted inside the centre of Noah’s tried robbery, and he’s roped into the robots’ mission to get better the important thing from the museum if you want to use it to return to their homeworld, Cybertron.
Drawn via the secret is a signature, the Terrorcons arrive on earth, and Elena is caught up in the warfare when the villains assault the Autobots outside the museum. Scourge deactivates Bumblebee and steals the key earlier than the Maximal Airazor arrives and drives him off. Airazor explains to the Autobots that the Maximals have been hiding in the world for lots of years and that Scourge most effectively has half of the Transwarp Key, which become cut up to hold it out of Unicron’s arms. Notwithstanding the risk, Optimus Prime is insistent that the key be reassembled so the Autobots can use it to go back domestically, even as Noah secretly plots to smash the key to hold Earth safe.
Elena’s studies permit her to deduce that the other half of the important thing should be positioned in a hidden temple in Peru, and the institution heads out aboard the rattletrap cargo aircraft Autobot, Stratosphere. In Peru, they meet up with domestically-stationed Autobot Wheeljack, who leads them to the temple, however, it is soon found that the alternative 1/2 of the secret’s no longer there. The Terrorcons assault another time, and the struggle ends with Scourge corrupting Airazor with Unicron’s darkish electricity. Finally, the Autobots meet Optimus Primal and the other Maximals, who give an explanation for that they moved the second one 1/2 of the key, entrusting it to a human tribe they have laboured with over the millennia. Scourge’s corruption overtakes Airazor, riding her mad, and Primal is pressured to kill her to keep Elena. Inside the chaos, Noah attempts to spoil the second half of the key but is satisfied not to with the aid of Optimus. It’s miles as an alternative stolen by means of Scourge, who then reassembles the two halves atop a volcano, erecting a tower and establishing a portal above Earth through which Unicron will quickly arrive.