Anne Halford is a candy artisan determined to follow in her mother's footsteps and become Mistress of Silver Sugar, a title granted only to royalty. To realize her dream, she hires Challe, a handsome fairy as protection.

In a world where aliens have invaded Earth and banned music, a group of fighter musicians use music as a weapon to maintain a resistance.

After a chance encounter with a self-proclaimed kaiju tamer, a high school student is drawn into a world of fighting mechas and monsters.