While playing a smartphone game known as Magical Girl Raising Project, Koyuki Himekawa, a middle school girl who loves magical girls, is chosen by the mascot character, Fav, to become a real magical girl known as Snow White. As Koyuki uses her ability to hear people in danger to help them out, she uses her Magical Phone to talk to the other magical girls residing in the city. The next night, Koyuki is called out by one of the other magical girls, La Pucelle, who reveals herself to be her male childhood friend, Souta Kishibe, and asks her to partner up with him. The next day, Fav informs everyone that he plans to cut the number of magical girls in the region down to eight.