Calm Down, Lady Ophelia!진정하세요, 오필리아 아가씨!; เย็นไว้ เลดี้โอฟีเลีย!; 落ち着いて、 オフィーリアお嬢様!

One day, the main character, Ophelia, who is the daughter of a fallen aristocrat, receives an order from the emperor. It was that she had been chosen as the princess of the 4th prince, Thedis, who was called the "Prince of Ice". It also warned that if she did not arrive at the Imperial Palace by the specified date, her estates would be confiscated, her father would be executed, and even her stepsister and younger brother would be punished. Ophelia, harboring a grand dream of becoming the Crown Princess and uplifting her family, sets off for the imperial palace. However, in front of her, unforeseen events are waiting...