After their exciting mission to the outside world, the Ashlam Academy Pentagrams find an ancient literary article that contains hermetic insights into the nature of London high society. Dazzled by the shocking revelations, the courageous girls set out in search of rare avian plumage, an essential adornment for the plan. Little did they know that, in another part of the world, these same birds would be involved in a sinister conspiracy involving heretics and the Monastic Order of Canterbury.