A team of three crew members: two people and a representative of an alien civilization went on a long expedition to the neighboring solar system. The course is laid not far from the asteroid belt, therefore the threat of their bombardment will be constant. Some fragments will break away and fly straight to your ship. Small stones will not cause harm, the ship is equipped with a protective shield, and large ones must be shot from a laser gun. The same expects the alien aggressors, who decide to attack you in the Alpha Space Invasion.