[The Dragon Ball] - the key to
the fate of the Tang dynasty.
The Son of Heaven and the fairy
swear to stop the decline of the Tong.

During the year of Gou Jung's rule, the world was in chaos and the common people suffered. The king of Seung's wife was afraid that her son Lei Lung Gei/Li Long Ji (Benny Chan) would be assassinated by the one who usurped the throne, Mou Jak Tin, and placed him in a bamboo basket to let it flow down the river.

In the Heavenly Court, the Jade Emperor finds out that a demon was causing trouble and the Dragon Ball, given to the Tong to control demons, had been covered with dust. He sends the fairy Bik Yiu (Annie Man) down to the mortal world to clean the Dragon Ball. Unexpectedly, Bik Yiu gets sucked into the Dragon Ball, which allowed Mou Jak Tin to become the Emperor. The Jade Emperor then orders Bik Yiu to find the true Crown Prince and aid him in restoring the Tong Empire.

Meanwhile, Lung Gei grows up into an adult under the care of his foster mother. He meets with his biological mother by chance and gets the Dragon Ball. Bik Yiu manages to get out of the ball and believes that Lung Gei is connected with the person she is searching for. She asks him to help her find the true Son of Heaven.

The Dragon Ball is the key to the fate of the Tong dynasty, so Lung Gei and Bik Yiu end up getting themselves into a dangerous situation which can lead to death. Lung Gei is later surprised to discover his true identity and swears that he will take back the Tong Empire ...