Sahyeol, king of the Clan of Blood, died. Not knowing what to do with their lives, the clan suffered. Later, a mysterious shaman came to them, offering them knowledge of a ritual that can bring dead people back to life. What will happen if Sayheol is reborn? Who is the mysterious Shaman? And who is "The Angel of Truth"?

Sahyeol and Sagiri are being targeted by unknown Angel that wears the flame symbol crest. The truth is that they were chosen to stop the opening of Chamber of Fire to the human world, whitch leads them to a place beyond the human imagination. A place other than Human and Angel worlds. What really hides Behind The Crimson Door? And who is the Angel who opened The Chamber of Fire?