Contract Ranks: Mortal Contract → Spirit Contract → Mystic Contract → Earth Contract → Heaven Contract → Saint Contract → Divine Contract → Hongmeng Contract
Beast Grades: Mortal Beast → Spirit Monster → Exotic Beast → Ferocious Beast → King Beast → Emperor Beast → Ancient Divine Beast → Primordial Hongmeng Ferocious Beast
Human Realms: Contract Disciple → Contract Adept → Grand Contract Adept → Spirit Contract King → Mystic Contract Emperor → Earth Contract Venerable → Heaven Contract Saint → Hongmeng Supreme God
Core Rules: One person can contract multiple beasts. The stronger the contracts, the more the Host’s body, soul, and talent grow in tandem. Beasts from the Classic of Mountains and Seas each possess unique talents, divine abilities, and inheritances. The fiercer a beast’s nature and the greater its combat strength, the more ordinary people fear and shun it.
More than 3,000 students and teachers at an ordinary modern high school, along with the entire school building, athletic field, and campus grounds, are forcibly transmigrated in an instant to the real ancient world of the Classic of Mountains and Seas. The spiritual energy of heaven and earth runs wild, ferocious beasts roam everywhere, and the rules are merciless: the strong prey on the weak. There is no law or order. Only by contracting exotic beasts can people gain power and survive.
Countless groups of humans across the globe transmigrate at the same time. The world of the Classic of Mountains and Seas connects to the myriad heavens, and humanity is at the very bottom of the food chain, mere “livestock” for the great races. Races, beast factions, and ancient inheritances wage war against one another.