From the stars above a sound is approaching. It is the sound of battle... It is the sound of war... It is the sound of... THUNDER IN SPACE The year is 2120 A.D. When an alien race known as the Zidians invades the solar system bent on the conquest and enslavement of Mankind, it's up to Jack Thunder, and the men and women of the United States Space Force to defend the Earth. The Zidians are amongst the most feared warriors in the Galaxy. They have spread their Empire across a thousand light years, conquering one world after another. Now they have their eyes on Earth. They send a huge war fleet, led by their most brilliant military leader, Commander Akdon. But the Earth is much more than the Zidians expect. The Humans have just emerged from a terrible conflict known as the Pirate Wars. They are battle hardened and armed to the teeth. The mighty Zidians have at last run into a race of beings as aggressive and warlike as themselves. The most colossal war in the history of mankind unfolds as fleets of Starships engage in battles of epic proportions. Carnage and destruction is spread across the Solar System as both Humans and Zidians strive for victory no matter the cost. Yet unbeknownst to either side there is yet a third power at play.....