After defeating his enemy Tri-Edge at the end of Vol. 1 Rebirth, Haseo and his friends, realize that they aren't able to log out of "The World", the MMORPG. Moreover, their consciousnesses are trapped inside their characters. As every player currently logged into "The World" discovers this, a widespread panic breaks out, and not even the system admins know what to do, as the outside world cannot be contacted
Disturbed by this event, Haseo, with the help of the G.U. guild, starts to investigate the truth behind this strange occurrence.
- Delve Deeper Into "The World": Featuring an enthralling storyline that builds upon the excitement of the first .hack series.
- Special Items for .hack Fans: Utilize your save data from the first .hack series and unlock a special surprise.
- Realistic Interactions: Communicate with your partners using the all-new communication features and an upgraded interface.
- Hack the Game: All new features allow for greater hacking abilities. Manipulte "The World" to your advantage.
- Strengthen Your Alliances: Form a guild with other PC's; share information, trade items and reap the benefits of their knowledge.
This game is also known as .hack// G.U. Vol. 2 Kimi Omou Koe in Japan.