 Confirming this with Lan's father, Dr. Yuichiro Hikari, the two set out to search for the cure of the problem, finding many situations of pragmatic Navis infected and causing mayhem. Stopping all of them and returning them to their respective operators, the two eventually discover more clues leading to the remnants of the WWW. It is revealed that a powerful Navi called StarMan.EXE has been distributing the virus. After defeating StarMan, MegaMan and Lan engage in a climatic battle against the powerful super virus Zero himself. However, at the conclusion of the battle, just as the finishing blow is about to be delivered to Zero, the heroes discover he is not evil. Lan's father then transforms him into a full-fledged Navi. However, their happiness is short-lived as a former member of the WWW simply named "Professor" reveals this was all part of his scheme to revive the dreaded Life Virus. Analyzing clues, MegaMan and Lan engage and defeat the second Life Virus and use Zero's observation powers to eventually bring the Professor to justice. There is dialogue at the end of the game between ShadowMan.EXE and his operator Mr. Dark, leading the plot into the next chronological installment, Mega Man Battle Network 2.
