In 2013, one of the most powerful storms ever recorded struck the Philippines, killing more than 6,000 people and destroying some 1 million homes. Typhoon Haiyan was soon followed by a social scourge; human traffickers moved in to the affected areas to prey on disaster victims. A government task force is combating the traffickers, who are using ever more cunning methods. We go to the front lines to investigate the new menace facing typhoon-hit areas.