プリンセス・プリンシパル - 東西に分裂したロンドンで繰り広げられる、少女たちのスパイアクション!
舞台は19世紀末、巨大な壁で東西に分断されたアルビオン王国の首都ロンドン。
伝統と格式ある名門、クイーンズ・メイフェア校には、5人の少女たちが在籍していた。
彼女たちは女子高校生を隠れ蓑に、スパイ活動を展開。
変装、諜報、潜入、カーチェイス……。
少女たちはそれぞれの能力を活かし、影の世界を飛び回る。
「私たちは何?」
「スパイ。嘘をつく生き物だ」
Princess Principal - In the early 20th century, the discovery of the substance Cavorite allowed the production of advanced military technology and steered the country toward conflict. London is now divided by a wall, and the Kingdom and the Commonwealth of Albion battle a silent war where espionage is the only weapon that can destabilize the enemy. A group of girls from the prestigious Queen's Mayfaire school work as undercover spies for the Commonwealth.
Led by Dorothy, an experienced driver with a striking personality, their group includes the talents of Ange le Carré, a cold-blooded liar and expert sharpshooter; Chise, a proficient samurai; and Beatrice, a voice-mimicking specialist. They use their unique individual skills for the Commonwealth to survive in a dark world filled with conspiracy, mystery, and infiltration. In the shadow of the war, they have only one goal in mind: completing their mission.