At the end of the 19th century, London, the Kingdom of Albion has been split into East and West sides by a giant wall. Five girls attend Queen's Mayfaire, a conventional and prestigious school. Under the guise of regular high school girls, they act as spies under cover. Disguise, reconnaissance, infiltration, car chases... Each girl uses their own set of special skills to dart around the world of shadow.
Ange has just transferred into Queen's Mayfaire Academy, and she's on a mission to recruit the Princess. The only thing standing in her way is the Princess' agenda.
The girls have their next assignment, and they must infiltrate a laundry mill to find a deadly weapon. In the mill, they catch a glimpse of the workers' conditions.
Chise writes to her sister about her life in the Kingdom of Albion, and how she struggles to adapt to their customs but the girls try their best to make Chise feel at home.