Xuan Lin was an ordinary college student, but it wasn't until his grandfather passed away that he learned about the family's secret for generations - he was actually the last "Beast Keeper" in the world of beasts in "The Classic of Mountains and Seas"! What Grandpa left behind was not just a relic, but also an "Ancient Scroll of Mountains and Seas" that could communicate with strange beasts and draw spells, and a heavy destiny. The "chaos beasts" in the world of alien beasts are ready to break through the passage and drag the real world into the endless abyss. Xuan Lin was forced to get involved in this cross-border crisis. Under the guidance of the ancient scrolls, he quickly awakened the ability to keep beasts, but at the same time he was hunted down by the mysterious "Beast Hunting Organization" who coveted the power of alien beasts. What's even more troublesome is that the world of alien beasts is not monolithic. Some desire peaceful coexistence, while others are ambitious. When he made a contract with the dying nine-tailed fox and opened a new chapter in the symbiosis between humans and animals, he discovered that this was not only a war to protect the world, but also the ultimate choice about how man and nature, civilization and wildness coexist. The world is counting down to destruction, can he turn the tide and become the true master of beasts?
