After ten months of drought, Empress Wu orders to put up Dragon Balls as sacrifice to pray for rain. During the transportation of the Dragon Balls on sea, they get ambushed by "Shark people". Di Renjie is then called to solve this case.

Through the process of mutual recognition and domestication between two generations of swordsmen, it tells story of Agou who discover courage to change himself. The inspirational story of an unknown inferiority little beggar who grows into a hero who has the world in his heart and saves the world for the people