
Believing all the hostile robots to be neutralized, Justice Man was about to sound the all clear, until a rogue Robot Master, Shock Man, attacked him from behind. When Mega Man and Justice Man arrived, they discovered that the human workers had evacuated the plant safely. Mega Man, feeling his team was not yet ready for the task, instructed his team to stay behind while he and Justice Man handled the situation. These robots immediately began antagonizing the human workers, prompting Mega Man and Justice Man to intervene. One day, while the Rock Force was busy training, a mysterious energy surge occurred at a nearby hydroelectric facility, corrupting many of the robots working there. Mega Man grew to call Justice Man brother and the two became inseparable over the course of the Rock Force’s development. This robot, despite being its own entity, matched Mega Man physically in every way and was programmed with a similar sense of justice. Light created an assistant for Mega Man, Justice Man. The Members of Rock Force are: Cut Man, Nitro Man, Tornado Man, Dive Man, Elec Man, Knight Man, Bomb Man and Fire Man. However, Mega Man, now wary of true everlasting peace, recruited eight willing robot masters and began training them if evil should dare arise, his team, the Rock Force, would be there to stop it. Wily had since vanished with Bass and Treble, permitting the world to once again focus on other matters: science, progress, and the ever growing relationship between humans and robots. It was the year 20XX and Earth had finally achieved an extended period of peace.

The game most likely takes place after Mega Man 10, due to Nitro Man’s presence.
