"You have been a good test subject," the scientist said. After seven years of genetic manipulation, the boy had been made into a zombie with the DNA of the twins. Though a zombie, he was different—he was not controlled by the twins like their subordinate zombies. A zombie with free will, he had become.
Only one thing remained: time travel. A machine the scientists had worked on could send someone back to the past, but only one person. The boy had been selected for this mission—to kill the twins before their strength grew, to slaughter them while they were still weak.
"Why can't I kill them?" Now, back in the past, Ron wondered. Had the scientist made a mistake? The twins were right in front of him, weak and fragile, yet he couldn't harm them. What he did not realize was that, despite his free will, the DNA he'd been experimented with forbade him from killing them. Then he remembered: he could only strike when they were vulnerable—when they selected and upgraded their zombies to generals. All he could do was bide his time.
"You guys must be hungry?" asked the five-year-old girl. "My father and mother left me to die. Will you eat them for me? I know where their camp is."
The twins turned to face the little girl.
"Sister, looks like we are going to survive after all."
"Yes, brother. Not eating this little girl must have been the best idea."