More than 50 years ago, a spaceship from Cybertron crashed on the moon, which triggered the space race between the United States and the Soviet Union. Humans rushed to the moon just to explore the secrets in the wreckage of the spaceship. Back to the early 21st century, after several battles, the Autobots finally defeated the invasion of the Decepticons and then cooperated with humans to jointly protect the beautiful earth. However, the incident in Chernobyl put the long-forgotten moon plan back on the table. In order to prevent the Decepticons from finding the energy column and doing evil, Optimus Prime and his comrades flew to the moon and rescued the Autobots' predecessor leader, Archimedes, from the spaceship of that year. Archimedes is the inventor of the energy column. Hundreds of energy columns can be combined to create a space bridge to achieve instant transmission of matter. Sam (Shia LaBeouf), who is busy looking for a job and managing his relationship with his girlfriend Carly (Rosie Huntington-Whiteley), is inevitably involved. He gradually discovers the Decepticon's conspiracy to manipulate everything, but he doesn't know that a bigger conspiracy and crisis is hidden behind the moon shadow...