For many girls in N-City, playing the popular social role-playing game Magical Girl Raising Project is as near to becoming a genuine magical girl as they can get. However, for a select few, that dream may become a reality. Koyuki Himekawa is one such girl, and one night she receives a message that she has been chosen to become a magical girl, her in-game avatar Snow White. As Koyuki and the other selected players in the city begin to assist individuals in need, they immediately receive another notification: the administration have decided to decrease the number of magical girls. Whoever accumulates the fewest Magical Candies (given for magical girl activities) in their weekly challenge loses their abilities.