Razielle has always had only one desire since the day her parents were burnt to death. To give the man who killed them a slow and painful death. But that man is one other than the crowned prince of Silla and she is no more than a low class slave and a secret assassin. No match at all. However, when the king searches for a potential bodyguard for his son, chances arise. There is no better opportunity then this to kill the sadistic murderer of her parents but fate has other plans.....