The series was told from the point of view of Mark Hollander, a British teenager who is enlisted as the sidekick of superhero of Ace Lightning and do battle against Lord Fear and his minions.
The series' protagonists were its principle teenage cast, and a group of superheroes known as the Lightning Knights, who come from the game world the Sixth Dimension.
The heroes of the video game, the Lightning Knights are a group of superheroes who guard the Sixth Dimension from evil.
The Lightning Knights search for the Amulet of Zoar's fragments, a triangular-shaped magic artefact which can open portals and summon characters from the game.
The villains of Ace Lightning, referred to as the "Evil Gang" in some materials all originate from the Sixth Dimension, save Kilobyte.