The narrative centers around a fresh trio of "Toei robot girls" referred to as "Team Z." The members include individuals with themes from Mazinger Z, such as Mazinger Z herself, Great Mazinger, and UFO Robot Grendizer. Their objective involves raising awareness regarding the potential of a groundbreaking energy source called "Photon Power." The team conducts various activities to promote this cause within Tokyo's Nerima ward. Unfortunately, the team often finds its supply of energy stolen, an act committed by the "Subterranean Empire's" "Mechanical Beast" girl team. Consequently, "Team Z" must confront their adversaries to thwart their schemes. At times, the girls also use these battles as a means of alleviating stress, often taking the opportunity to pummel the "bad girls."