Beatrice was enjoying a slow life, making potions and cooking in the hideaway her grandfather had left her. Then one day, she learns of a big event called "Carnival" in the castle town. Beatrice is excited about her first festival, but on the advice of Erz, the chief magician at the royal palace, she decides to set up a stall! With the help of the fairies, she makes magic soup, herbal cookies, herbal candies, and many other items, but an unexplained illness begins to spread in the town, and she has to take action to cope with it!