It's 2029. A female government cyber agent and the Internal Bureau of Investigations are hot on the trail of a "The Puppet Master," a computer virus capable of invading cybernetic brains and altering its victim's memory. Created by the Ministry of Foreign Affairs and codenamed "Project 2501," this 'hacker' is actually a prototype virtual agent which has now defied its makers by seeking asylum within a new host body outside of the electronic net.