It's the year 200X and everyone in Den Tech City is plugged into the Net. But living in cyberspace isn't always fun and games. High-tech crimes and pesky viruses are always a big problem for the authorities. Thank gookness for MegaMan and his NetOperator, Lan Hikari. Together, they do their best to keep their hometown safe from being permanently deleted.
MegaMan's fiercest enemy Bass has returned and he's more powerful than ever. Vested by the Dark Power, Bass has fused with CyberBeast Grave to become DenTech City's worst nightmare.
To save the day, MegaMan and ProtoMan must come together using the SoulUnion program. Apart, the two friends are no match for the new Bass. But together, there's a chance they can smash their archenemy to smithereens.