Space Marines. Dashing guys from General Ramsey's Marine Expeditionary Force. They emerged victorious from the battle with representatives of the cruel Ahannu civilization, passed through the giant “stargate” on one of the planets of the Sirius system and entered into battle with the monstrous “Dawn Hunters” of Xul, who consider themselves the new rulers of the Galaxy... Now the “Dawn Hunters” are striking counter attack. Their forces have invaded the Solar System and are bombarding the Earth and planets colonized by earthlings with giant asteroids. Humanity is on the verge of death. And the only way to stop the aggressors is to strike back at their home planet. are sent to the other side of the Galaxy - to win or die...