Old School is back! And girl power reigns supreme! Ayame, Sumire, Renge, a nd Satsuki are charged with the protection of the Earth from a powerful new enemy. But th ese girls may be in for more than they"ve bargained for! They"ll have to not only master the experimental mobile armor - Z-mind, but hold down their part-time jobs, all this while keeping their lives... normal! But will this be enough to stop the forces of evil from c onquering the Earth? It"s gonna be ggroovy!