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.
We'll get our hands on all the answers 
if we can catch him.
لا بدّ أنّنا سنعرف أشياء كثيرة
إذا قبضنا عليه
Jede Wette, wenn wir ihn schnappen,
bekommen wir die Antworten auf einige Fragen.
Si lo atraparemos,
descubriremos muchas cosas.
Si lo atraparemos,
descubriremos muchas cosas.
Si on l’attrape,
on découvrira beaucoup de choses.
Se lo catturiamo, 
capiremo sicuramente varie cose.
Certamente vamos descobrir
muita coisa se o pegarmos!
Если поймаем его, получим все ответы.