Jun Sakurada, a middle schooler who has shut himself in at home after being bullied, is chosen as the medium for Shinku, a living porcelain doll built by the maker Rozen. Shinku is one of seven Rozen Maidens, each animated by a gem called a Rosa Mystica and bound to fight the others in the Alice Game to become the perfect doll. Feeding Shinku his life energy drags Jun into the dolls' contest and, slowly, back toward the world he walked out on.