Based on the world of Taiyo Matsumoto's manga "Tekkonkinkreet" this film sublimates the story of a young girl crow and a seagull living a free and unrestrained life into a mythological tale. In the mysterious futuristic landscape of the waterfront subcenter when there were few leisure facilities, the film powerfully depicts the struggles and battles of the vital life force that pervades the city.

Centered around Masujiro Omura, who became a commander for the Choshu clan, and founded the modern Japanese millitary system.