Matsushima Michiru has been a struggling idol long enough to have a clear picture of what success looks like—it looks like Kazami Kazuki, the top idol she has admired for years. One night, wishing on a falling star, she gets an answer she did not expect: the star is actually the familiar cat Nyanmel, come from a magical world to recruit her. The world needs a magical girl. Michiru's path to becoming a top idol just got considerably more complicated.