Fourth volume of the 1980's children's sci-fi animation series. During the Cybertronian War,the Autobots and Decepticons both crash-landed on Earth. Millions of years later, the two duelling factions are brought to life by geological activity. The Decepticons' aim is to strip the earth of its energy resources, while the Autobots try to protect the planet's population from that fate. And so an endless battle begins.