"I once had the chance to taste ingredients from a dungeon, and they were just unbelievably delicious—" The world is in the midst of a grand VTuber era. In mysterious spaces known as dungeons, countless monsters exist, and defeating them yields items and skills. Among the treasures found there are so-called “dungeon ingredients,” considered to be the finest delicacies, occasionally becoming hot topics among streamers. After hearing these words from his favorite VTuber, Jin Sakai, dungeon explorer Io Yozakura decides to treat him to some dungeon gourmet. To do so, he begins streaming under the name Botan Yamano. At first, growth was slow—but using his experience as a dungeon explorer, he starts broadcasting cooking streams featuring dungeon ingredients, which go viral in a big way. With cooking techniques that defy common sense and dishes that surpass imagination, Botan Yamano’s streams soon captivate viewers all over the world—!?