In this age, there are two developed worlds; "the real world" and "wired", or the virtual network world.
Soma Toru belongs to a hacking group, Steppen Wolf, which runs around the network world freely. They attack the database of the UN forces. During one of these attacks, he loses Nonomura Yuya, his friend as well as the team leader. Toru is arrested by the army. In exchange for letting him free, he has to work for an anti-hacker organization, the first squad of the UN Security Force Information Administration Bureau.
While working for them, he is looking for the person who killed his friend, while the other members also have their own reason to fight.
The three-way fights of the terrorist group, the security enterprise, and the army, continue every day. The various events occurred during the fight seem to be independent of each other at the first glance, but they're slowly converging on one event as if they were attracted by something.