Gu Changfeng accidentally traveled to the fictional ancient martial arts world and found that it was not as beautiful as he imagined. In order to survive, he had to get involved in martial arts disputes, make friends, and practice martial arts. He used modern knowledge and thinking to help his friends solve crises, and gradually emerged in the martial arts world. But at the same time, he also faces threats from the martial arts leaders and confusion about his identity. As the plot develops, Gu Changfeng discovers that this martial arts world hides deeper secrets, and his appearance does not seem to be accidental... He must make a choice between survival, morality and ideals, and finally find his own way of "xiaxia".
