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They came from an unknown location within the distant constellation Draco. By the time the inhabitants of Earth had fully understood the invaders' mission, it was almost too late. The Draco military had been sent to the third planet with orders to eradicate the indigenous population while leaving its valuable infrastructure intact, paving the way for the mass colonization that would follow. Using swift and brutal methods, within days the Draco seemed to have achieved their goal ... Pockets of survivors found each other in the dark and banded together into sectors. Allie Spencer and her brilliant best friend Nathan McCaffrey were barely teenagers when they were assigned to Sector Three. Determined to live, Allie searched deep within herself to find the bravery she needed. Under the strong leadership of nineteen-year-old Henry Reynolds, the group learned to leverage their strengths. They adopted a strict military lifestyle, and every member was assigned a rank and responsibility. They learned survival techniques, how to handle weapons and, most importantly, how to think like a Draco. As the enemy hunted down and eliminated survivors, Sector Three became a unified band that would not go down without a fight.