In the year 2506, little Jarod Anderson's world-worlds-were full of wonder and excitement. Until the aliens came. They came, and in one clean sweep, they killed twenty-one million human beings, including Jarod's family. Now, twenty-four years later, Jarod returns to the red planet as the leader of the best, most elite fighting force ever known to man. Jarod and his team have come to save mankind from extinction and avenge their families at the same time. The catch? After planting the bomb that would kill all life on the planet, they must cross half of Mars underground through unknown caverns...

Jeri Kirkland built and used an andriod she named 'LEX', to help save mankind from extinction through an alien invasion. The mission had been a success. But Lex, the android, had malfunctioned and almost caused Dr. Kirkland's death. Jarod Anderson, Jeri Kirkland's husband, had led this team of soldiers. And during their mission, they had to destroy the android. Or so they thought.... Now, Lex was back. And he was angry. Very angry. And in those eight years the android had spent on the planet Mars, it had developed inexplainable powers. And now he was free. Now... he would get his revenge. His...