Today is the 500th anniversary of the invasion of the human world by the Expeditionary Force from another world. Human beings have kept the fire of civilization and vowed to drive the monsters back to their hometown.
The male protagonist Fei Chai is a professor at the School of Human Civilization of Military University. Since there is only one non-military department in the entire Military University, the School of Human Civilization, their sense of presence in the school is the lowest, and nothing good can happen to them.
By chance, Fei Chai joined the frontline observation group. At the critical moment, Fei Chai's patron saint, the nine-tailed fox, was summoned and helped Fei Chai and the teachers and students return to school safely. Fei Chai became a hero when he returned to school, and the status of the College of Human Civilization was immediately improved.
With the help of the nine-tailed fox, Fei Chai continued to summon more mythical beasts, and unknowingly became the backbone of mankind's fight against monsters from other worlds...
