Yuusaku manages to capture the the Mysterious Lifeform as he pursues the hacker group "the Knights of Hanoi." To defeat the Knights, he logs in to the VR space "LINK VRAINS" as "Playmaker" and challenges them to a Duel with the Mysterious Lifeform as a hostage.
In a Speed Duel, there are 
obstacles other than the duel.
Ein Speed-Duell birgt neben
dem Duellieren diverse Tücken.
En un Duelo de velocidad
hay obstáculos externos al duelo.
Em um Duelo Relâmpago,
 há outros obstáculos, além do duelo.