Cybertron is ravaged by civil war between Autobots and Decepticons. In an attempt to end the conflict, Megatron considers using the AllSpark to reformat the Autobots, but Optimus Prime wants to prevent that from happening, even if that means destroying Cybertron, itself, in order to save it. Early on, Bumblebee and Wheeljack discover a space bridge while searching for Energon. They were apprehended by Decepticons Starscream, Thundercracker, and Jetfire. When the Autobots attempt to escape, they encounter Megatron, but are saved by Optimus Prime who engages Megatron and introduces Bumblebee to the rest of the Autobots on the Ark. Bumblebee leaves, claiming that “he doesn’t want to fight their war.War Cybertron Kingdom Season 1
In the second episode, Ultra Magnus surrenders to the Decepticons, as he repeatedly says that he is “tired of endless war.” Megatron tortures Magnus for the location of the Autobot base, after using Magnus’ comlink to lure the Autobots into a trap. This ambush results in the supposed death of the Decepticon Impactor, who is later revealed to be alive and switches sides after being repaired by the Autobot Ratchet. Wheeljack leads the rest of the Autobots to Ratchet, and, after a brief argument from Mirage, the Autobots convince Ratchet to repair the space bridge found by Wheeljack and Bumblebee. Jetfire and Skywarp eventually find the Autobot base, but Jetfire defects and defeats Skywarp. At the end of the series, Optimus Prime throws the Allspark through the repaired space bridge to an unknown location.
Following the conclusion of the Prime Wars Trilogy animated series in July 2018, and the official closing of Machinima in February 2019, Hasbro‘s production studio Allspark and Netflix announced a War for Cybertron Trilogy animated series produced by Rooster Teeth, alongside Allspark Animation and Polygon Pictures for a release schedule in 2020.