Our planet Earth was attacked by aggressive aliens. Invasion had been so sudden that human casualties were just uncalculatable. Aliens had perfect technologies and humans were always defeated in direct encounters. Due to interception of alien transmissions earth scientists were able to determine alien bases displacement. They were placed on the planets of solar system. United government of the earth decided to open war on enemy territories. Project ''star avenger'' was developed to create a mobile military unit that could destroy all alien bases. Humankind, united by single goal, managed to build heavy weaponed and armored truck. It was the truck that was the sole hope of the entire planet earth habitants. Destroy bases of the aggressive aliens for the sake of humankind.