The game takes place inside a virtual reality military training simulator named "AIDA" which has since been long-abandoned.

The player takes the role of one of the many hackers attempting to break the codes of the simulator and extract the most valuable data possible for fame and profit.

To do this, the player must explore several "sectors" that are infested with various kinds of enemies, including soldiers, security bots, giant bugs and other insect and plant-like creatures.

The game's intro cutscene informs the hacker/player that hacking too deeply into unknown non-civilian protocols with what seem to be homebrew hacking tools carries the risk of contracting a medical condition called the "Achiba Syndrome", and warns them that upon infection that they 'will not be able to return' - presumably meaning their consciousness will become corrupted or otherwise lost and their minds will not be able to return to their bodies in the real world.

After hacking into the training simulator, the player (in the chronological order of the map menu layout) arrives at what seems to be an underground city filled with snipers, drones and some insect-like creatures that are presumably analogues of computer viruses.

Upon defeating what appears to be the final boss and collecting all upgrades and special weapons, the player is given access the simulator's root Kernel.

[2] While it was praised as innovative[3] and for having some of the best visuals on the PSP,[4] it received criticism due to a lack of character development, poor enemy AI in the single-player mode, and bad controls.