As Jun Sakurada fights and lives alongside the Rozen Maidens, special lifelike dolls made to battle each other, he enjoys a rare break in which he is told a story during the events of Rozen Maiden: Träumend. When Jun buys a brooch as a present for Shinku, the fifth doll, she refuses to accept it at any cost. Souseiseki, the fourth doll, then recounts the story of how Shinku and the first doll, Suigintou, first met. This tale tells of the cruel and heartbreaking circumstances surrounding Suigintou's birth, and how the many misunderstandings between her and Shinku shaped their longstanding rivalry fueled by Suigintou's unfettered hate towards Shinku. The stage is set in Rozen Maiden: Ouvertüre in 19th century London as the story delves into the past of these one-time friends and the secrets that they hold.

Average high school student Aruto Kirihara is obsessed with the Alice stories, written in this alternate world by the enigmatic recluse, Alternite L. Tachyon. One night, while writing his own version of a potential "third book," he sees a girl flying in front of a full moon... and she looks just like the "Alice" in his imagination. Aruto runs out of his house and chases the flying figure from the ground, ending up at a library, where he witnesses her in combat with another costumed girl. And so begins his sudden introduction to the world of Alices, an elite club of super-powered teenage girls who regularly fight in an extra-dimensional Wonderland in order to steal each other's "hidden stories." When all of the stories have been gathered, they will form the legendary third volume, "Eternal Alice," and the possessor will be granted one wish. It probably won't be Aruto, who can't turn into a magical girl. But it could be his doting little sister, Kiraha. Or maybe the girl of his dreams, Arisu... (Source: Discotek Media)

Aizawa Ryota was in the 3rd grade of the preparatory course of Central Military Academy. In 2045 AD, he went to a space station, Aries, for the training with his classmates including Nagase Saka and Nittak Kazuhiko. However, the station was attacked by a terrorist group, Hallarax. Now they must find a way back to earth. (Source: ANN)

As the story of Rozen Maiden closes, a new chapter begins in Rozen Maiden: Träumend. Shinku and the other sentient dolls of the Rozen Maiden collection are living life as usual at Jun Sakurada's house. Having settled into his role as Shinku's partner in the deadly Alice Game, Jun overcomes his former fears and prepares to return to school. And although Shinku and the other dolls idly pass the days by in the comfort of Jun's home, dark times lie ahead as a new foe presents herself: Barasuishou, the seventh Rozen Maiden. But Barasuishou is a mystery even to her sisters, none of whom have ever laid eyes on her until now. Shinku considers this a sign that the Alice Game is coming to an end, meaning the dolls will soon be forced to fight one another. Haunted by the upcoming battle and nightmares concerning another doll, Shinku begins distancing herself from the others. If she wishes to claim victory, it will come at a high cost—the lives of her sisters.