Ridel is an ambitious student who seeks to rediscover old spells that has never been used in the modern days. During her research, she accidentally discovers a book that seals an evil witch within and frees the said witch unintentionally.
The Witch has a grudge against Queen Alice who sealed her within the book and sets off to defeat the princesses who have the powers of the deceased queen. If the witch succeeds, then the world will sink into chaos.
To clean up the mess she has started, Ridel teamed up with the vampire Ru who knows all about ancient magic and history and together they journey to protect the princesses against the threats.