After the notorious Ungrar, the King of Viruses, breaks free from his confinement in Vaccine World, Maya, the Goddess of Vaccine World, dispatches Mugimaru to Earth to seek out a human capable of embracing the powers of Vaccine World as the Magical Nurse. Mugimaru's quest leads him to Komugi Nakahara, a carefree and whimsical teenager aspiring to be a cosplay idol. Juggling her role at Kiri-Pro Promotion Company with her newfound duty of combating Ungrar's devoted minion, the Magical Maid Koyori, Komugi captivates audiences with her antics in this humorous anime series.