The story of Salah ad-Din's expansion from Egypt back into Syria, his brushes with Rashid ad-Din Sinan's Assassins, his constant lobbying of the Abbasid caliph in Baghdad, his struggles with the Zengid remnants and with a cast of enemies among the crusader states including Baldwin the Leper, Reynold de Chatillon, Raymond of Tripoli, and King Amalric of Jerusalem.