Headmasters begins with Galvatron commanding a new wave of Destrons to wage war on Cybertron: the Destron Headmasters. The Cybertrons are saved by the arrival of the Cybertron Headmasters, led by Fortress (Cerebros, the head of Fortress Maximus). It is revealed that Fortress Maximus departed Cybertron millions of years ago in search of energy and has finally managed to return home. He explains that the Headmasters originate from a planet called Master; the human-sized robots residing there constructed Transformers-sized bodies for themselves. They can then transform into the heads of these robots and have now joined the Cybertron-Destron conflict.