Mega Man Battle Network 4 Blue Moon

The game starts with showing a massive asteroid, heading towards the Earth. In addition to it, there are protagonists that want him fail. What will you do in this situation?

The end of days is near and none will escape it. The only person who is able to stop the massive asteroid is Mega Man, however, there are few other cases he must deal with in that time. Two villains have come to prevent Mega Man from accomplishing the mission and you must help our hero.