Vector Prime is one of the first Transformers. A powerful, wise and incredibly ancient warrior, he has served as protector over Cybertron since its beginnings. Pulled out of the shadows of time by a distress signal broadcast by his damaged planet, he arrives too late to save Cybertron without assistance. Arising from an era in which all Transformers lived in harmony, he is unaware of the conflict between the Autobots and Decepticons, a fact that Megatron uses to trick him and steal the map to the lost planets and the planet keys. Realizing his mistake, he joins Optimus Prime and pledges his knowledge and skill to the desperate quest to retrieve the planet keys before Megatron.

Vector Prime outmatches Starscream in wits and strength, but the ancient Autobot is pushed to the limits of even his incredible power by the demands of the search for the Planet Keys and the defense of Cybertron from its countless enemies. Forced to use his remarkable time-traveling abilities to constantly hop between dimensions, he finds himself weakened during the frequent skirmishes with Decepticon forces. Nonetheless, he must persevere, for nothing less than the survival of the Universe is at stake!