In Rozen Maiden: Träumend, Jun Sakurada gets a reprieve from battling alongside the Rozen Maidens, life-like dolls created for combat, when he hears a tale. While shopping for a gift for the fifth doll, Shinku, Jun buys a brooch that she adamantly rejects. Souseiseki, the fourth doll, recounts the story of Shinku's first encounter with Suigintou, the first doll, exposing the tragic events of Suigintou's making and their long-standing bitter feud fueled by her unrelenting enmity for Shinku. Rozen Maiden: Ouvertüre takes watchers back to 19th-century London, where former pals Shinku and Suigintou must come to terms with the concealed elements of their past.