Zhang Yi, a descendant of Chiyou, was born without spiritual power and was the youngest Chinese detective. When he was young, his father went to the demon world to find his mother and his whereabouts were unknown. After Zhang Yi grew up, he defeated demons and slayed demons and met Zhao Xiaoshuang, who also had no spiritual power. When tracing the whereabouts of the demon stone, he met Liuwei Xiaoqing. After learning that his parents were imprisoned in the demon world, he decided to practice spiritual power and find his parents. On the way to catch ghosts, I met many people who were also spiritual cultivators, and they decided to participate in the spiritual power conference held every three years.
Zhang Yi opened a detective agency and met the innocent and lovely Zhao Xiaoshuang who came to look for the lost cat Xiaohua. He found that Xiaohua turned out to be the red cat of the demon clan. After subduing the red cat hungry ghost, he discovered that there was actually a six-tailed demon fox controlling it. Zhang Yi and the two-tailed red cat fought against the six-tailed demon fox and could not resist it. At this time, the six-tailed demon fox saw the Fuso sword used by Zhang Yi. This object was the weapon used by Chi You. Knowing that Zhang Yi was a descendant of Chi You, he surrendered to Zhang Yi.
It turns out that the six-tailed demon fox was in the name of the demon king to cholera the world. Because the demon clan could not break the barrier, the six-tailed demon fox cut off its demon power and became three tails. It came to the human world through the cracks and searched for the scattered demon clan and ghost clan in the human world. It also used demon stones to enhance the demon power and backfired on the mind, cholera the world. He learned from Vulpix that his parents died at the hands of the great demon king of the demon world. The great demon king was injured and practiced in seclusion, and the eight demon kings under his command continued to fight.
So Zhang Yi decided to eradicate the demon clan in the human world and fulfill his parents' mission.
Xiaoshuang also learned how to use spirit stones under Zhang Yi's training, and Red Cat also evolved into a three-tailed monster during the battle.
At this time, the demon clan in the underworld caused the evil spirits to escape from prison and come to the human world. The underworld is in chaos, and the underworld's psychic envoy Zi
