The spiritual energy has been hidden for thousands of years, quietly resurrecting in modern times, demons appear in the world, and a earth-shaking change is sweeping the world.
Lin Yu, who was originally a social animal in 1996, died suddenly due to overtime and traveled to a parallel world. Due to an inheritance, he was forced to take over the zoo that was on the verge of bankruptcy at home. The animals in the zoo are dying, the financial deficit is huge, and the future is bleak. His life seems to have fallen into an endless abyss. At this time, he accidentally awakens the system. With the blessing of the system, the black dogs guarding the zoo have turned into demon kings. When the demons tear off the seal and return to the world, they begin to doubt life. Why are there all demon kings outside?
