Every quadrennial, a deadly global spectacle known as the Queen's Blade draws beauty warriors from all corners of the world. The tradition, established by the initial monarch, is an exhibition of strength in which the mightiest females reign supreme over the continent. The stakes are immense in sanctioned matches witnessed by celestial beings, since the victor has the authority to issue a command to the defeated rival. Such commands may entail disarming them of their weapons, turning them into a subordinate, or even overriding the reigning queen. Elina, scion of a far-flung aristocratic family, embarks on a pursuit to locate her sister Reina. Her sister abandoned everything to become a fearsome warrior.