Massacre Along The Amazon! Shang-Chi (Earth-616) crouches on a limb in the Brazilian jungle, waiting for a file of Si-Fan to pass beneath him. He drops on the last one, Chai Phan, knocking him out. He takes Chai's robe, mask, and place at the end of the line. Nearby, Fu Manchu orders the pilot of his helicopter to hover over the compound of Wilhelm Bucher, from whom he wishes to get the plans for a Nazi secret weapon. The Nazis in the camp spot him and prepare to spring a trap, while Fu comments that he has predicted it and has a trap of his own. On the Amazon River, Sir Denis Nayland Smith and Black Jack Tarr have restarted the engines of a paddlewheeler and set course for Bucher's compound. Bucher, in his own boat, arrives at his compound.
Shang-Chi and the Si-Fan meet Fu. They split into two groups: one to assault the compound head on, the other to circle around and catch the Nazis from behind. Fu goes with the first group, Shang-Chi with the second, where he hopes to remain undetected. The first group of Si-Fan attack the compound, guns blazing. One of the Si-Fan in the second group detects Shang-Chi. He pulls off his disguise and prepares to fight.
