Minamo and her best friend Natsu encountered a strange land called Alicepia where they go to a live event held here. However, the event was attacked by a group of monsters called Jamaocks. At that moment, Minamo witnessed a Princess who sings and dance to defeat the monster.

Minamo Sorano transforms into Princess Ripple but continues to struggle against monsters due to her inexperience. Just then, Princess Zeal, whom she saw recently at a concert venue, comes to her rescue and saves the day. The true identity of Princess Zeal is Kagari Shirube, who happens to be Natsu Hinomoto’s idol and someone she deeply admires. Minamo learns more about the Princesses and the monsters known as Jamaock from Kagari.