Life is hard when you're an Arcturan pilot. Life is dirty when you're an Arcturan pilot on a garbage reprocessing mission. As a result, little blue planets circling pretty yellow stars are a welcome relief. Whilst admiring a particularly blue planet near a very pretty star, your ship was pulled violently off-course by a tractor beam and you were dragged down onto the surface of a small, grey, alien moon. That was yesterday. Today, you have stolen a primitive alien craft and your only chance of escape is to neutralize the tractor beam so that you can release your own ship. Unfortunately, hordes of killer robots seem determined to stop you from doing so!