Humanity has been kept bound within the solar system for decades by a hostile alien race known as the Screen. A group of rebels steal an experimental starship and escape the solar system, commanded by former cadets John Roberts and Julie Olson. Determined to learn what the Screen has planned for humanity, the crew roams the stars in search of their mysterious enemy.Almost annihilated by the Screen in battle, the crew and alien alliance members attempt to regroup and restart the mission. But the attack had a profound impact on John Roberts. Learning of secrets about his past as well as losing those close to him, can John bring the crew together to finish what they started, or will he sacrifice them in a quest for revenge?This is the fourth novel in the exodus science fiction series.