Four Gods secluded themselves from society and watched as Baekje and Goguryeo’s relationship worsened (worsened more mainly because Goguryeo’s king was killed in a battle between Baekje and Goguryeo).
One day, Ju-ahn, “Hyeon-mu” of the Four Gods, sees two stars sour up into the sky. Since one came from the palace in Baekje, it predicted the birth of “Su”, later known as King Ah-shin. The other star came from Goguryeo, prophesizing the birth of Dam-deok, later known as Gwang Gae Toh Dae Wang.
Realizing that his new master has come to the world, Ju-ahn awaits in the vast Manchuria with a young girl, Sujini, to see which of the two will be his master. Sujini was picked up as an orphan by Ju-ahn and considers Ju-ahn as her father.
Therefore, the story is on the Four Gods looking for their master, Gwang Gae Toh Dae Wang, who was an expert in tactics, the woman he loved (Sujini), who was also loved by the coldhearted King Ah-shin.
from
http://www.koreandrama.org/?p=473 ^_^