You are a Novice assassin who only spends their time in the Brotherhood's library of Masyaf instead of training. Finally fed up with your noncompliance to go up the ranks of Assassin, Al Mualim asks Altaïr to mentor you. Little do you and Altaïr know what lengths your relationship will go to as you are trained. (A/N, this story starts before Solomon's temple. It leads up to there, tho.)