Akira was a normal shy high school boy, however while he had a phobia of technology he also had the skill to easily repair broken devices. In 2014 after stepping up and saving a girl he was unfortunately run over by a truck. Sixteen years later the police duo Alma and Minami Uenozono are on a mission to obtain EX-ARM No. 00, however they find themselves up against a group using EX-ARM No. 08, desperate they activate EX-ARM No. 00. Mysteriously, Akira's consciousness awakens within the super-weapon body and he must now co-operates with the police with the goal of getting his lost memories and body back.