It is the future. Mankinds Global Climate Change has not only affected Earth, but now Global Climate Heat has managed to pollute the Solar System sending asteroids hurtling towards Earth. Not only that, the ROBOT WARLORDS of the planet ROBOT WARLORD PLANET have gotten mad and have decided that now would be a good time to attack Earth and destroy mankind.
Blast your way to continued existence. Do not let mankind die off because of Solar System Climate Change. Use your spaceship, armed with the most advanced weaponry mankind has invented, to destroy the rocks and those ROBOT punks. This is your mission. SAVE EARTH.