The legendary dollmaker Rozen crafted several unique dolls during his lifetime, yet their distinctiveness did not stem from the materials employed. Dubbed Rozen Maidens, each doll was infused with a Rosa Mystica—a precious gem that grants them life. However, these dolls serve a specific function: they are compelled to battle one another in a contest known as the Alice Game. The victor assumes the title of Alice, the perfect girl who will earn the opportunity to meet their father and creator. Jun Sakurada, a middle school shut-in, encounters the Alice Game firsthand when one of these dolls arrives at his residence. After he winds her up using the provided key, she awakens and introduces herself as Shinku, the fifth Rozen Maiden. Although Jun is quickly irritated by her haughty demeanor, they are forced to cooperate when attacked by another doll. At Shinku's request, Jun becomes her medium, permitting her to draw upon his life force as power to defeat their foes. Following the battle, additional Rozen Maidens appear and choose to reside at Jun's house. Yet, can any tranquility exist when their very nature dictates that they must fight each other?