Following the Eurasia and Nightmare incidents, Reploids work diligently to rebuild the Earth. Growing weary of the seemingly never-ending Maverick Wars, X decides to retire in search of more peaceful solutions, leaving Zero in charge.[6] In X's absence, Maverick activity rapidly begins to rise, which leads to the formation of an unsanctioned anti-Maverick vigilante group known as Red Alert. As the group grows more and more reckless, one of their members, a new generation Reploid prototype named Axl, decides to defect. Red, the group's leader, is angered by Axl deserting them, and goes on a rampage to get him back.