Before Sam went to college, he found a Rubik's Cube fragment in his bag. As a result, the Rubik's Cube fragment engraved the internal data in Sam's brain. Later, another fragment kept by the military was stolen and used to resurrect Megatron. After being resurrected, Megatron went to see the Fallen King Kong. Megatron learned that the Rubik's Cube data in Sam's brain could help them rebuild their race.

So the Decepticons were sent to catch Sam, who was studying in college. Sam, Leo and Mikaela were attacked by Alice (a female Decepticon) at school, and then killed Alice with a car, but The car was lifted up by a surfboard and taken away to Megatron.

The upright Decepticons want to cut open Sam's head, Optimus Prime and the Autobots arrive to rescue Sam. Optimus Prime took Sam away first, and the Autobots followed. Megatron and Optimus Prime fought in the woods. Megatron sent Starscream and Surfboard. Optimus Prime was besieged by three people, and he was injured and killed Surfboard. Cut off one of Starscream's arms. Later, in order to save Sam, he was attacked by Megatron and killed with a knife through the heart.

The three of Sam left with Bumblebee and the twins, while Ironhide, Ratchet, and Sideswipe returned to the military camp.

Sam later found Agent Simon in District 7 and asked him for help. At this time, the little Decepticon wheel captured by Michaela came in handy. He helped Sam find the one who arrived on Earth early. Transformers Skyfire.

Skyfire helped the Autobots. In order to resurrect Optimus Prime, everyone was transported to Egypt to find the original energy matrix left by the Brahms. At this time, the Fallen King Kong led the Decepticon army to the earth. . Attempting to obtain the original energy matrix to destroy the sun.

Other Autobots also rushed to Egypt with the army and brought the body of Optimus Prime. According to the code given by Skyfire, Sam found the location of the original energy matrix and saw the body of the elder. But the original energy matrix turned into ashes.

Sam did not give up and rushed towards Optimus Prime with these debris, but was chased and intercepted by the Decepticons. The Autobots fought against the Decepticons, and Skyfire also came to support, but was seriously injured in a surprise attack. Sam was injured by Megatron's weapon and fell to the ground and passed out. When he passed out, he saw the dead veterans and told Sam: "The original energy matrix was not discovered, but obtained through hard work. You Risking your own life to save Optimus Prime is a leader, go ahead." Sam woke up, and the original energy matrix changed back to its original state. Sam resurrected Optimus Prime, but the fallen King Kong took away the original energy matrix and went to the top of the pyramid to run the machine to destroy the sun. .