A strange land called Alicepia has existed somewhere in the world since ancient times. It was inhabited by fun-loving residents called Alicepians, but before long, mysterious monsters called Jamaoc began to appear, and the once peaceful peace of Alicepia was gradually threatened. If things continued as they were, Alicepia would lose its sparkling luster. This is a story about the adventures of the Princesses who, even in such difficult times, never forget to sing in their hearts. A pop song fantasia filled with courage and energy, Princession Orchestra!