This is a world composed of all kinds of wild beasts. Humans can not only become beast masters by contracting with wild beasts, but also become warriors through acquired efforts. There are also all kinds of magic potions and weapons of different shapes to arm human civilization. Human beings live in huge city-states and rely on city walls to protect themselves from wild beasts from the outside. The humans who failed to enter the city became deserters, relying on the forces within the city to survive. As time goes by, the protagonist Xu Mo will continue to realize that the threat to mankind is no longer wild beasts and racial self-harm, but alien invasions that threaten the entire planet.
