In 2201, most humans live in underground cities; however, space travel is expanding. In Book One: Topside, we met Cooper, a 14-year-old boy with a knack for fixing things. He made his living as a freelancer going "topside" to the ravaged cities in search of treasure. When an old man told him that his purpose in life could be greater, Cooper ventured to the stars to begin his cadet training. In Book Two: Ryder, we learn more about that old man and his fight against the terrorist organization trying to stop space travel forever.