Lan's father, Dr. Hikari, has started an incredible experiment, bridging the CyberWorld to reality! But when things go terribly wrong, and his father goes missing, Lan fears the worst! The key to the experiment, the Dimension Core, has drawn powerful Viruses to it, and now these monsters have materialized in the human world! Lan and his friends must battle these increasingly terrible life-sized Viruses, while MegaMan and the other NetNavis desparately look for a way to help them before it's too late!