The collector ship is about to conclude it's centuries long mission. It has just landed on Earth to abduct humanity's greatest warrior. He's supposed to join various aliens in stasis as they're transported to a distant planet where they'll battle one another to the death for the Collectors' amusement.
David Cole is a runaway from a secret government program but he can't hide from the alien collector ship. When it tries to abduct him, he fights back and inadvertently releases all of the collected alien warriors on Earth. With the planet swarming with deadly aliens David is forced to contact the government program he escaped from for help.
As he learns more about himself and more about the aliens unleashed upon Earth, he realizes the real threat has yet to show itself: the collector aliens will come looking for their ship when it doesn't arrive as expected. They must be stopped, even if it means he has to form an unnatural alliance to stop them.