A young girl works as an assassin to the Queen. No one knows of her except for the queen and her butler. However, when the queen sends her shadow puppet to kill one of her assistance, things become chaotic.
Ciel Phantomhive is called to solve the case involving a series of killings that mirror gruesome fairy tales. But finding the killer may take more assistance than just from his loyal butler, Sebastian Michaelis. Ciel hires a bookstore clerk, April Phillips, for her extensive knowledge in stories. But while she proves to be a respectable ally of the Queen's watchdog, Sebastian suspects there may be more to her than just her human limitations.