Yusei, Jack, Crow and Bruno decide to trail Lazar, who had stolen their program for Primo. Noticing he is being followed, Lazar heads to the mall where Yusei and company manage to apprehend him, but he makes a break for it. Lazar manages to lose Jack and Crow using holograms, though Bruno manages to figure out, and he and Yusei follow Lazar to a complex. Lazar gives the program to Primo, who then notices they are being followed and sets off the alarm, separating Yusei and Bruno. Primo activates a dueling Guard Robot filled with Yusei's battle data in order to stall Yusei whilst he installs the program into hundreds of Duel-Bots, collectively called the Diablo. Bruno almost stumbles upon this until he is knocked out by Primo and thrown out of the secret factory when he triggers a lost memory. Meanwhile the Guard Robot uses its high prediction capabilities to block off Yusei's high level monsters and special summons, putting him in a tough spot.
