A veteran hero returns to work, and the battle to protect the Earth begins with the magical girls.A hero who defeats monsters invading from another world and protects people. One of them, Yatsugi Yoshitsugu, is fired from the company he works for because he is a hero who has returned to Earth from another world, and ends up working as a freelance hero.Meanwhile, his former colleague asks him to do a certain job. He wants you to lead a new group of heroes, magical girls, who will save the world in place of the tyrannical hero. In this way, the veteran hero finds a new job and throws himself into the fight to protect the Earth with magical girls.However, their enemies were not only monsters...