Mega Man and his Battle Network pal Lan are in trouble again. It's only been a month since the evil WWW terrorist's attempts to hijack an important military satellite was shut down; and yet, Cyberspace is about to be hit by an even more resilient, never-before-seen virus, codenamed "Zero." It's up to you, Lan, and Mega Man to terminate this seemingly impermeable and decidedly relentless new enemy. Collect battle chips, battle enemies, solve puzzles, and uncover secret characters from the Mega Man universe.