From Savage Violent Ape to Eight-Armed Mad Ape to Primordial Azure Ape... After Chen Fan and tens of thousands of people crossed over to the Beastmaster world, he discovered that he could not only see the evolution path and methods of the beasts, but also their preferences and weaknesses. Not only that, he could freely enter and exit his beast space, which had four doors leading to four unknown worlds. More than two thousand years ago, on a night when two moons appeared in the sky, this world became a world of monsters. Mountains, rivers, plants, and trees could all transform into spirits, and ancient swords and weapons could also nurture spirits. Beasts, demons, giants, elves, insects... pushed human living space to the limit. Until Beastmasters who could sign contracts with monsters appeared, humanity was reborn...