Taking refuge in the immense sewers of Central Java at the head of about twenty men, Pau anxiously awaits the arrival of his dear friend Sandaukan, who arrives from Bali with one hundred pirates, all on horseback, of which a machine gun is placed. Although they are numerically smaller than the twenty thousand followers of the Azarab, the latter are only bandits and brahmins without courage who flee at the first discharge. Sandaukan happily comes from Yanez, but there is no food for the poor old horses, which are starting to go hungry and then die. In the meantime, everyone has known Gustavus Van Horn, who together with a Brahmin, but a friend of Pau and Lou Ignis, frees his men. Pau, Kammamuri and twelve shikari leave to see if there are places where it is possible to collect plants without being seen by the enemies, and they manage to find a still whole farm, spared from the fire that destroyed the whole capital, and where there are many plants. The small squad manages to finish a first harvest, but when he notices that the enemies are surrounding the small mansion, Pau sends two men to call the Mawa. Sandaukan immediately rushes, frees the besieged and flees to a hill with Pau. From here he sends the Rajaputo and Kammamuri to the Javan mountains, to incite the mountaineers to hurry up and join them.