Welcome to the year 200X. With a Personal Terminal (PET) and a NetNavi (NetNavigator) at their disposal, citizens of DenTech City are plugged into the Internet in a big way.

But living life in Cyberspace can be tricky. Computer hacking, virulent viruses and high-tech crimes run rampant in the future.

To the rescue comes a hyperactive little kid named Lan Hikari. When he teams up with MegaMan (his specially programmed NetNavi), he's DenTech City's top boy hero.

With each new NetBattle, Lan and MegaMan get stronger and stronger. But when the pair achieves PerfectSynchro, the pint-sized NetNavi flips out. Now the NetPolice must do the unthinkable; they must destroy MegaMan before he destroys the world!