Outbreak Company's story centers around Shinichi Kano, a "thoroughbred class" otaku with a light novelist father and an erotic game artist mother. He has no special talents except for his vast knowledge, opinions, and insight on moe.
Despite this, the Japanese government assigns Shinichi as a "moe" evangelist to the Holy Eldant Empire, a parallel world with an entrance through a thick forest of trees in the Mount Fuji area. In this fantasy world where dragons soar the skies, Shinichi forms a deep friendship with the half-elf maid girl Myuseru and the beautiful young empress Petoraru. Even as he deals with the threats of war between different factions, he worries that he himself is an "shinryakusha" (invader) to this wondrous land.