An EX-ARM auction is organized by an individual who calls themselves "Auctioneer." Criminal groups from all across the world flock to the Megafloat hoping to get their hands on them.

The Counter Squad is asked by the government to investigate the auction undercover as the bodyguards of Jinkokusha, the leading group in the Japanese underworld. They are immediately dragged into an inter-group conflict, and Akira loses consciousness in combat. When he wakes up, he's greeted by Auctioneer.
Criminals from across the globe 
have gathered here for the EX-ARMs.
اجتمع المجرمون من أرجاء العالم
"لأجل "إكس-آرم
Eine einmalige Zusammenkunft von Schurken
aus aller Welt, die sich ein Ex-Arm sichern möchten.
Los EX-ARM atrajeron
a los villanos de todo el mundo.
Los EX-ARM han atraído
a los villanos de todo el mundo.
Les crapules du monde entier sont là
pour mettre la main sur des EX-ARM.
I criminali di tutto il mondo si riuniscono
 con l'obiettivo delle Ex-Arm...
Criminosos de todo o mundo
se reuniram aqui pelos EX-ARMs.
Они собрались здесь
со всего мира ради Экс-Арм.