Martha decides to join PAX and is sent to fight in South America. There, she experiences the physical and psychological horrors of combat, falling victim to a chemical weapon that permanently turns her hair blonde. She discovers a plot by her commanding officer, Lieutenant Stanford Moretti, to destroy large patches of the rainforest for the enemy. After Moretti shoots her and leaves her for dead, Martha stalks his unit and kills all of the troops under his command. Martha ends up wounding Moretti. While both recover in a hospital, Moretti blackmails Martha into becoming his unwitting servant.