Yoshida Komugi is an energetic but clumsy middle-school student who performs as an idol. Although her popularity is lacking, Komugi lives a dual life between her two worlds, until a mysterious creature named Usa-P appears before Komugi and grants her the powers of a Legendary Girl. Now Komugi has reluctantly become Magical Nurse, and must add a third life of fighting monsters to her already crowded lifestyle.