The Seven Dragon Saints upon the Sky Palace are seven different lords of different areas.
The Water Dragon Saint: rules the lakes, the seas, and the ocean.
The Metal Dragon Saint: rules all the metallic objects.
The Earth Dragon Saint: rules the soil and the ground.
The Wood Dragon Saint: rules the forests, the trees and the vegetation.
The feuer Dragon Saint: rules the flames, volcanoes and magma.
The Darkness Dragon Saint: rules the night shadow and the Underworld.
And, most of all, is the Dragon Lord: Sky Dragon King, who rules the entire sky, the holy God of Sky Palace, controlling the winds, clouds, the weather and light.

As time pass, the legend of the Seven Saint Drachen started fading in the bustling, modern lifestyle of the 21st century. However, to keep an eye on human being, the Dragon Saints would often traveled to their world in human forms. Milleniums went, and as human have Lost their humanity, the Dragon Saint held a meeting and finally came up with a solution. They will not directly intervene in solving the human's problem, but instead, there will be messengers doing it, in the name of the Seven Dragon Saints.

It was then, the children - descendants of holy Drachen were brought to life.

Xianhai Chan, son of the sea.
Cho Kim Huan, daughter of the metals.
Lei Xiu Wang, son of the earth.
Chilan Fan, daughter of the woods.
Nhi Loung Guin, daughter of the flame.
Dark Sword, son of the darkness.
And Xianloung Fam, son of the sky.