During a certain dynasty, Emperor Long was bent on war and expanded abroad, which caused the treasury to be empty every year, and the people's taxes increased. The population was also withered because the court often recruited young people to replenish the army. That year, there was a severe drought. Many areas in the Central Plains had no harvest, and the people were even more destitute. In these troubled times, a young man was ordered by his master to go down the mountain. In order to pursue the truth told by his master and solve the mystery of his life experience, he met several companions and experienced a series of adventures, and finally embarked on a road of "thorn dragon"...