Transformers One is an animated film set on Cybertron before the Autobots and Decepticons clashed on Earth. The film focuses on the origin story of Optimus Prime and Megatron, exploring their friendship and the events that led to their conflict. The film features a strong cast of characters, including Orion Pax, D-16, Elita-1, and B-127, and the story explores themes of leadership, friendship, and the consequences of violence. Transformers One is visually stunning and features exciting action sequences that are reminiscent of the classic Transformers cartoons.