N years ago, a spacecraft escaping from the battlefield crashed into the moon. The United States sent Apollo 11 to detect it and found it to be a huge robot. They discovered shock waves (new ones) at the Chernobyl nuclear power plant in the former Soviet Union. After Optimus Prime learned about what happened on the moon, he took a spaceship to the moon. The captain of the crashed spacecraft was actually the Autobots' previous leader, Natural Enemy. But the reason why the Autobots fled the battlefield was because he believed that the Autobots could not win and wanted to join the Decepticons. So when his secret was discovered, he killed Ironhide and found Megatron using energy pillars to move the Decepticon troops hiding on the moon. Optimus Prime was being driven out of the Earth by humans, but the spacecraft was ambushed by Starscream, but they did not die. Appearing at a critical moment, the protagonist and other human troops killed Starscream and Shockwave. Bumblebee, Ratchet and the others (except Optimus Prime) were captured, and when they were about to be executed, Zero cut off a lot of the aircraft due to Bigfoot and his brother sabotaging the enemy ship, and Bumblebee took advantage of the opportunity to fight back. Optimus Prime destroyed an energy column, angering his enemies, and they started a decisive battle. Optimus Prime was no match for the Enemy and one of his arms was cut off. At the critical moment, the protagonist's girlfriend used a provocation method to get Megatron to deal with the Enemy. Optimus Prime took advantage of Megatron's inattention and chopped off his head. In the end, Optimus Prime used the gun that the enemy used to kill Ironhide to kill the enemy.