A must-buy for Megaman Fans, careful with the difficulty, though.
This game starts with a girl (or lady, I can't tell because she's pretty small) comes running because she's being chased by robot soldiers, she then finds a "Legendary Reploid" named Zero, with no choice, she throws her cyber-elf to it, (a cyber-elf is a kind of summon creature or something like that.). From then on, you control Zero, you and Ciel must get out of there, and at the end of the level, you get Zero's sabre, nuff said.
For me, the best thing about this game is the soundtrack, same with the other MMZ games, I dunno bou't you. The story can be pretty unclear to you if you haven't played the Megaman X games, for example, you might ask: Who the hell is X?, well, that's just one of the many questions, as for fans like me, you may be very proud on what Capcom has made.