8 years ago, Western Civilization visited 19th century Japan. Mechanized dolls and new steam-powered creations began spreading throughout the country. The Wind Gang is a group of doll and steam users who believe in using their creations to violently bring about a new Industrial Era. They attack and destroy the peaceful village of a young doll user named Hiwou one day. Hiwou and his friends escape with a giant doll named Homura. Hiwou now wants to find his father, so that he can help defeat the Wind Gang, and bring peace back to Japan.

(Source: Anime News Network)