Because her stepmother couldn't afford to live, she sent Sophie and her two sisters to the hat shop as apprentices. The two sisters soon left the hat shop to pursue their own dreams, but Sophie persisted. One day, a moving fortress came to the town. It was said that the owner of the fortress, Hal, specialized in absorbing the souls of young girls, so the girls in the town didn't dare to get close. In order to avenge Sophie's meeting with Hal, a vicious witch used witchcraft to turn her into an 80-year-old woman, and Sophie couldn't tell others about the witchcraft in her body. Helplessly, Sophie decided to flee the town alone. It was dark, and the weak Sophie didn't walk far before she came to the moving castle. Thinking that she was already an old woman, Sophie bravely walked into the castle. Unexpectedly, she met the same fire demon as her. The two agreed to help each other break their respective spells...