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.

Suddenly summoned to a fantasy world and betrothed to a princess, Kazuya Souma is crowned the new king. Unlike those before him, he won't be using swords and magic to rule; will administrative reform really get this kingdom back on track?