A different world where dragons are the absolute rulers. The true dragon lives above the Nine Heavens, and under it, various sub-dragon species and dragon beasts with dragon bloodline are spread across the earth, forming the ruling class. Humans were once enslaved, labored and even eaten by dragons and other powerful beasts. After a long period of time, some human settlements were formed, but the whole was still at the bottom of being oppressed and hunted, struggling to survive, and the "soul beast awakened". At a certain age (usually 16 years old), humans have the opportunity to awaken the blood soul hidden in the body and transform into various strange beasts (soul beasts) in the Classic of Mountains and Seas. The strength and type of the soul beast directly determine a person's status. Those who fail to awaken or awaken weak soul beasts will still have a tragic fate. The dragon race and its vassal races are naturally powerful and do not need to be awakened. They regard human soul beasts as "miscellaneous and inferior creatures".