In the future, Earth’s communication network has been rapidly developed, and the Wave Road connects the real world to radio waves. In this golden age, a belligerent race from Planet FM has begun to attack the world, with the intentions of destroying it and its inhabitants. Meanwhile, on one starry night the young Subaru, who dreams of going to space, meets the FM life form known as War-Rock; and together, they are able to fuse and become Rockman, a being capable of traveling the Wave Road and defeating the FM life forms. Now, in addition to fighting Denpa viruses and other monsters, Subaru must also discover the secret behind his father’s disappearance and the reason why the FM life forms want to capture War-Rock.