Fifteen-year-old Daniel has followed in his parents' footsteps as the Alien Hunter, exterminating beings on The List of Alien Outlaws on Terra Firma, but when he faces his first of the top ten outlaws, the very existence Earth and another planet are at stake.

"When Daniel X discovers that a duo of evil extraterrestrials is plotting to control kids around the world through video games, he's determined to take them both out of commission. This pair of wicked game masters wants to destroy the human race by turning brainwashed video gamers into an unstoppable army of doom! They're also running an endangered species hunting club on the side, and their next target is none other than Daniel. He'll have no choice...

Daniel faces dastardly Number Two, who has slowly been amassing an underground army of aliens to help him enslave Earth's population in preparation for the arrival of Number One, the most powerful alien in the universe and Daniel's arch-nemesis.

"Using his incredible abilities, Daniel X continues to track down intergalactic criminals bringing their alien brand of evil to Earth! The next target on the List is Phosphorius Beta, an explosive demon of fire with a legion of flame-weaving henchmen. Even though his own powers have grown since taking down Number 5, the only chance Daniel has of beating this ancient demon is to go back in time to the Dark Ages and destroy Beta before his blistering...