Old‑school style returns, and girl power takes center stage. Ayame, Sumire, Renge, and Satsuki are charged with protecting Earth from a powerful new enemy. Their mission may prove far more demanding than they expected. They must master the experimental mobile armor, Z‑Mind, hold down part‑time jobs, and keep their lives normal, all while confronting the looming threat. Will they succeed in stopping the forces of evil from conquering the planet?