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.

Mortal Tie Jian is an orphan with no sword soul in his body. Since childhood, he was adopted by sword refiner Chen Guang and grew up with each other. Tie Jian will acquire the supernatural power of a thousand-year sword master by chance.