This is a multi-senario game, in which three playable characters, Mega Man, Bass, and Awesome Man, compete in a huge robot competition hosted by Century Man. Each playable character has to fight a certain number of Robot Masters other people have made, including some from the previous Century games.
Mega Man senario
Sometime near the end of the competition, a strange presence threatens to ruin the tournament. This unknown character takes over most of the finalists.
Mega Man meets Awesome Man and thinks that Century Man may have a clue as to what happened, so he runs off while Mega Man works his way through the defected Robot Masters. Stun Woman, Thermo Man, and Beam Man appear as bosses so Mega Man can have new weapons to deal with the defected RMs.
Mega Man's senario style is "Classic Mega Man", which means it's the style of all Mega Man games. Like Mega Man 3, there are two weakness cycles, with 5 RMs pertaining to one and 3 on another.
|IRN-002||Stun Woman||Lightning Command||Whip Snap|
|DLN-101||Thermo Man||Burning Ice||Wash Whirlpool|
|DLN-103||Beam Man||Continuous Beam||Shadow Web|
|MXN-109||Twin Men||Twin Wave||Burning Ice|
|MXN-110||Camera Man||Whip Snap||Continuous Beam|
|MXN-111||Arachno Woman||Shadow Web||Viking Axe|
|MXN-112||Wash Man||Wash Whirlpool||Twin Wave|
|MXN-113||Viking Man||Viking Axe||Lightning Command|
Bass enters the tournament knowing that he'll win. Besides, would he resist a fighting tournament?
Bass's senario style is "Metroidvania", which means that all the RMs are in one large explorable dungeon with different sections based on the Robot Master. Liquid Man's portion is the hardest to explore, as it requires the use of the other weapons.
|IRN-004||Surf Man||Ocean Blast||Nova Star|
|DLN-106||Push Man||Magnet Launcher||Clay Bomb|
|DLN-108||Liquid Man||Cell Split||Bright Moon|
|MXN-114||Noise Man||Sound Shield||Magnet Launcher|
|MXN-115||Clay Man||Clay Bomb||Ocean Blast|
|MXN-116||Wing Man||Metal Feather||Sound Shield|
|MXN-117||Lunar Man||Bright Moon||Cell Split|
|MXN-118||Celest Woman||Nova Star||Crescent Cutter|
Awesome Man senario
Awesome Man, like Bass, enters the tournament, but unlike him, he enters for fun.
He eventually realizes that something is wrong with the tournament and tries to contact Century Man. But wait...what's wrong with Century Man?
Awesome Man's senario style is "Leaderboard", meaning that Awesome and seven other Robot Masters will fight tournament-style. The RM choices are random, meaning the first three bosses are random, which he'll get a special weapon after. He will eventually fight all eight. Also, there are no RM stages in his senario; just the bosses.
|IRN-008||Guard Man||Riot Guard||Chess Shield|
|DLN-102||Empty Man||Dark Hole||Meteor Charge|
|DLN-107||Bounce Woman||Power Bounce||Fire Surprise|
|MXN-125||Prank Man||Fire Surprise||Riot Guard|
|MXN-126||Apple Man||Apple Shield||Steel Saw|
|MXN-127||Steel Man||Steel Saw||Dark Hole|
|MXN-128||Meteor Man||Meteor Charge||Power Bounce|
|MXN-129||Rook Man||Chess Shield||Apple Shield|