In the city of Arland, a girl named Rorolina Frixell ("Rorona") works studiously as the apprentice at the workshop of the genius alchemist Astrid Zexis. An unexpected knock at the door comes with a declaration that the kingdom wishes to shut the workshop down unless it can prove it is valuable enough to keep running. Astrid, aloof and disinterested, abdicates responsibility for the atelier, leaving Rorona to save her budding career on her own. Can Rorona meet the Castle's growing demands to save the shop and her future?