Countdown To Extinction
Both the Autobots and Decepticons recover from the aftermath of Cybertron's proximity to Earth. Megatron returns to lead the Decepticons. Starscream breaks into Dr. Archivil's lab, and connects the exponential generator there on a timer, which will cause it to explode and destroy Earth. He then travels to Cybertron, where he will collect the released energy. Megatron and Prime, warned by Shockwave, team up to stop the explosion; Starscream returns to find out what went wrong, and is dragged away by a none-too-pleased Megatron.