The story tells the story of Gu Changyuan, the deposed prince of the Qi Dynasty, who was poisoned due to court strife. He was reborn and returned to the starting point where everything had not happened yet. He accidentally awakened his mysterious bloodline and obtained a mysterious ancient book "Stories of Mountains and Seas" that can communicate, summon and even synthesize the strange beasts in "The Book of Mountains and Seas". With this "golden finger", he tolerated his growth in the crisis-ridden struggle for imperial power, secretly conquered powerful beasts, and formed his own "legion of beasts." While he was studying in Jixia Academy, he made allies, saw through conspiracies, and fought back against his brothers and powerful ministers who persecuted him. On the other hand, he met Su Wanqing, a mysterious woman with a special mission who was good at taming animals. The two went from testing each other to working together to explore the lost secrets of mountains and seas on this land. As his power expands and the truth gradually emerges, Gu Changyuan discovers that his bloodline is actually related to the "beast-controlling god" in ancient mythology. The disaster sweeping the world is far from a simple struggle for imperial power... He will control thousands of strange beasts, crush all obstacles, and reveal the ultimate secret of his life and era.
