Following her master's wishes, Frieren arrives at the Imperial Capital, a flourishing civilisation of magic.

As a plot to assassinate Serie brews in the shadows, the Continental Magic Association—serving as guardians—and the Special Mage Forces, dedicated to defending the Imperial Capital, clash over their respective ideals and beliefs.

Amid the chaos, the heroes’ hidden motives come to light, setting the stage for unexpected alliances and startling revelations…?!