After Yusei Fudo and his friends defeated Rex Goodwin and his Dark Signers, they thought the threat had passed. In the months that followed, Yusei, Jack, and Crow work to bring New Domino and the Satellite Sector together. Akiza, Luna, and Leo return to school at Duel Academy. But in the few months since the defeat of the Dark Signers, a new threat has arisen. Iliaster brings forth a new weapon to use against the Signers. Fortunately for the Signers, they have a new ally. A new duelist with a mysterious mark on his arm.