A United Nations Space Command (UNSC) cadet experiences a crisis of conscience before facing the Covenant on the battlefield, and draws inspiration from Master Chief while fighting for the future of mankind in this sci-fi action opus based on the hit X-Box franchise. As the latest crop of cadets trains to defend Earth from extraterrestrial threats, new recruit Thomas Lasky questions the need to fight. Later, after witnessing the ruthlessness of the Covenant firsthand, Lasky realizes that he may have what it takes to follow in the footsteps of the great Master Chief.