In 500, the 100/100 virtual world was created, and creatures called Digimon were born. Then Digimon invaded the human world. About five years later, the first beast tamer appeared and humans began to counterattack. Finally, under the mediation of the Four Holy Beasts, humans and Digimon reached a basic consensus. Digimon are as good and bad as humans. In order to deal with the evil invasion of Digimon, the country established a cyber detective team. Qingshan is one of them. The story begins with my daily work.