Although the war on Earth has ended, the war between Transformers has not. Red Spider flies back to Cybertron, planning to return to Earth with an army for a final decisive battle. The Autobots discover that Megatron's body is missing, originally stolen by Shockwave. Megatron is subsequently revived, determined to start his revenge. Meanwhile, Red Spider is also leading reinforcements from Cybertron, and at this time, the Autobots have enhanced their combat capabilities. A great battle is inevitable...