Transformers: Exodus within the "Prime" universe, showing how they came to be the leaders of their respective factions. The book also delves more heavily into the mythology of other well-known aspects of the Transformers characters and locations, such as Alpha Trion and The Fallen, whose original name is revealed in this story for the first time as Megatronus. The story is set on Cybertron, the home planet of the Transformers. It has been several centuries since Cybertron's golden age of space exploration and planetary colonisation, and its society has declined into stagnation. Almost every Space Bridge has gone offline due to years
Transformers: Dark of the Moon team, Bay and the team spent nine months developing a more portable 3-D camera that could be brought into location. In a hidden extra for the Blu-ray version of "Revenge of the Fallen", Bay expressed his intention to make "Transformers 3" not necessarily larger than "Revenge of the Fallen", but instead deeper into the mythology, to give it more character development, and to make it darker and more emotional. Unicron is briefly shown in a secret "Transformers 3" preview feature in the "Revenge of the Fallen" Blu-ray disc. Ultimately, the producers decided to forgo a plot involving the planet-eating Transformer,