Long, long ago, there existed a world of magic and science. But having both powers was making people conceited and lazy. So God split the world in to the world of science, Elde, and the world of magic, Fandavale. One day in Fandavale, a terrible witch named Cendrillon (Cinderella) revives. Cendrillon plots to rule both worlds, and searches for the "key" which holds tremendous power. A young boy from Elde by the name of Sōta meets a mysterious girl from Fandavale, Akazukin (Red Riding Hood), and her talking wolf companion, Val. Sōta learns that he is the key Cendrillon is searching for. Now it is up to Akazukin, Val, and the other Fairy Musketeers to protect Sōta from Cendrillon and her Nightmarelians who wish to obtain the power he mysteriously possesses. (Wikipedia)

Kotoko and Natsuki are shoujo detectives, who are looking for the Three Carving, which holds magical powers. A third girl joins them, and they must solve the mystery and fight the evil, to protect and save the people.