The film, based on the light novel series, continues the story from volume 6, exploring humanity's struggle during the Great War and the origins of Tet, the "One True God". The story highlights the lack of magic circuits in humans and the power of intellect, serving as a prequel to the No Game, No Life universe.

No Game No Life: Zero
In the midst of the Great War, two new heroes, Riku and Schwi, navigate the turmoil, paving the way for the Ten Covenants.