In the year 200X Dr. Wily claims to have reformed and works with Dr. Light on a project to build a peace-keeping robot named "Gamma." However, the eight Robot Masters that the two scientists had designed in order to help maintain peace go berserk and make off with the eight power crystals, so once again, Mega Man is called into action, but this time with a trusty canine companion named "Rush," to go after them and retrieve the crystals, located on various mining planets in space. Proto Man (DRN-000; known as "Blues" in Japan), Dr. Light's first creation, also finally returns after a year in hiding to "train" Mega Man by dueling him in various locations throughout the blue-bomber's (Rockman's American nickname) journey, but if Mega Man comes out the winner, he will open up the path forward to him. Proto Man disguises himself as "Break Man" prior to the Dr. Wily Stages (otherwise he is undisguised).
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