Sixteen intelligent species populate Disboard, ruled by Tet, the sole True Deity. The most basic—Imanity—is composed of humans, a people lacking magical talent. In a land where decisions are settled by simple contests, humanity seems trapped—until two outsiders arrive and alter the balance. Their lives intertwine with the fates of kingdoms, each choice echoing through realms beyond imagination in the vast expanse of. On Earth, step‑siblings Sora and Shiro are inseparable hermits excelling at online titles under "Blank." Though infamous online, they see existence as another tedious game. After replying to a cryptic message from an unknown sender, they are whisked away to Disboard. The enigmatic messenger is Tet himself, explaining the world"s immutable laws. After he departs, Sora and Shiro search for shelter, leading them to Elkia—the sole remaining Imanity kingdom. They quickly discover survival hinges on mastering the ancient game of fate. There they meet Stephanie Dola, a passionate youth vying for the throne. Desperate, she strives to reclaim her father"s crown, but reckless tactics make success impossible. Motivated by her zeal, Sora and Shiro support Stephanie in restoring Elkia, hoping to seize rule over the realm. Their quest unites destiny and chance, with each decision reverberating across Disboard"s cosmos, guiding humanity toward a hopeful future.