18-year-old Sophie lives with her stepmother and younger sister in a small town in Europe. Since the death of her father, her stepmother Fannie has arranged for her daughters to work in a hat shop originally run by her father. Not interested, so she quickly left the hat shop; Sophie insisted on staying because it was his father's favorite.
Once, Sophie was stopped by two soldiers on the way to visit her sister. At this time, a mysterious man-Hal appeared. He used magic to help Sophie solve the problem and sent her to his sister. On the way, Hal and Sophie were hunted down by the Witch of the Wild. That night, the Wilderness Witch appeared in the hat shop run by Sophie and cursed Sophie, turning her into a 90-year-old lady, and Sophie could not reveal the content of the spell to anyone. So Sophie had to run away from home. On the way, she ran into the mysterious Scarecrow Turnip. In order to avoid the wind, she was introduced to the mysterious Haar moving castle. There, Sophie got acquainted with the source of magic power that drove the castle to move-the flame demon Cassifah, the little boy Maruk, the Scarecrow Karp, and the male protagonist Hal. Sophie stayed in the name of a cleaning woman and spent a peaceful and wonderful time. Sophie gradually came to life and was attracted to Hal unknowingly.
The owner of the castle, the magician Hal, has magical powers, but he did not accept the king’s order to participate in war like all magicians in this country, but used his own power to defend the peace. Hal often returns to his castle exhaustedly after dusk, and he sinks deeper and deeper as a result, becoming a demon state. Until one day, Hal told Sophie that she hated war, and Sophie decided to help Hal. On the way to the palace, Sophie met the Wild Witch. It turned out that this was a trap. Although the palace witch Saliman was the teacher of Howl and the Wild Witch, in order to prevent their heart from being controlled by the devil, she took back the Wild Witch’s magic and turned her into an ordinary wife. Sophie came to the palace because she couldn't help but feel relieved. When Saliman used magic to kill Cassifah and recover Hal's magic, Sophie rushed up to rescue Hal.
The war finally broke out. In order to protect Sophie and everyone, Hal faced the enemy alone. Sophie, who loves Hal in his heart, cannot bear to let Hal suffer alone, and is determined to face Hal together. So, she drove the moving castle to follow in Hall's footsteps. At this time, Hal had gradually lost consciousness and became a strange bird that could only fight to protect Sophie. After this series of accidents, Sophie accidentally discovered the random door through the guidance of the ring and returned to Hal’s past, and learned that Hal met Meteor Cassifah at the place where the meteor ended his life in childhood, and the latter did not. Wish to die in this way and sign a contract with Hal, let the magic power of Cassifah, the demon of fire, be used by him, but Hal's own heart will also become the exchange for this contract, linking Cassifah with Hal’s life. Together.
At the end of the story, Sophie rescued Hal, who was dying, broke the agreement between Hal and Cassifah, and helped Hal retrieve his heart. At the same time, the curse on himself was lifted, and Kapu the Scarecrow was in Sophie. Under the kiss, he also got rid of the complicated curse-it turned out that he was the neighbor of the king, and promised to stop the war after returning home. Although getting rid of the bondage of the contract, Cassifah still missed the life with them, so under its drive, the flying mobile castle carried Sophie and Hal and his party and lived a peaceful and happy life.
