The year is 1285, and the Crusades are totally in right now, and with rumors of a demon in the east, the Pope sends one of his knights to investigate the claims and possibly do away with this so called demon... Of course, this "demon" is Ra's al Ghul, who has been expecting the Catholic Knight, does away with his men quickly, and lets this terrifying encounter be the first public record of him in the civilized world, thus starting the legend and myth of the Demon's Head.
This bit of history is being told by a messenger from the Secret Society, proving he knows well who he deals with, and offering power that the Secret Society can give him. Ra's sort of laughs the offer off, and has his Man-Bat army kill the man's escort. Ra's throws the man a sword, in an effort to test him, as well as asking once again "who am I?"
The man tells more of Ra's legend, how Ra's moved through the world, leaving death in his wake, and gathering the greatest killers known to man. Ra's' influence spread far more throughout the world via the spread of things like addiction and plague, which help strengthen his secret empire.
The two men continue their duel, but Ra's is clearly in a higher swordsmanship class than the man, but the Society's messanger tries to throw Ra's off his game by recounting his most recent chapter in life, his legacy beyond himself, who he'd leave his empire with, everything form Batman, to Talia, to Damian. This strikes a nerve with Ra's, but he manages to disarm the man, and laughs off the notion that "death" would defeat Batman.
With the duel over, and Ra's clearly not accepting the Society's offer, the messanger decides to play dirty, and get a cheap shot off electricity in when Ra's' back is turned. Luckily for Ra's, Ubu takes the attack for him, as two spears shoot from the walls, and pin the man to the ceiling by the wrists, where his electric implants were located. Leaving the man to bleed out, Ra's tells him that his masters are cowards for sending a messenger, and that they didn't find him, he was the one who drew them to himself in order to make his message clear. He will observe the world this Society builds, and as history has shown, he will do what he's always done, and allow his legend and myth to grow in the shadows.