Mega Man Zero 3 is set in a world called “Neo Arcadia” that has been created as a utopia for humans and Reploids (robots). This new chapter continues the adventure of the series’ title hero, Zero, and his Reploid allies in the Resistance group who are fighting for peace. In Mega Man Zero 3, Zero encounters a malevolent new Reploid called Omega who has unleashed the evil power of the Dark Elf to brainwash the Resistance in order to take over Neo Arcadia. As the only one who has escaped the brainwashing attack, Zero must fight to save his allies and Neo Arcadia.