Iris, a daughter of the count, had to go to the land of beasts to apologize on behalf of her sister, who caused a big problem at a diplomatic party. She apologized sincerely, even though she was a surrogate, but she was unable to obtain the king's forgiveness. However, Iris wanted to resolve the problem somehow, and decided to stay in the beast country and become a bridge between the two countries. With her character, she gradually gained the trust of the beasts, but her sister, who should have stayed in her country, appeared in the country of the beasts?