In order to investigate a mysterious huge explosion which occured in an Ameroupean desert area, Yuuichirou, Netto and Enzan head to Ameroupe. Blues and Rockman explore the remains of the extreme heat explosion with the unmanned vehicles, but in the cyberworld they are attacked by old type viruses which were thought to be extinct. Rockman and Blues are rescued by a Navi who declares himself to be Colonel. But then, the old type viruses subtantiate in the real world and attack Netto and co. Yuuichirou considers whether or no tthe explosion may have had something to do with Duo. - Courtesy of Heat Man