An alien race 70 light years from Earth is desperately looking for a new home world as their own is about to be destroyed by a rogue planet. The only choice is Earth, and so they decide to de-populate, and take it for themselves. A lone scientist battles to prove that the aliens are finally on Earth, unfortunately she has come to the aliens` notice, and now the fight is on, the winner takes all.The threat of Armageddon forces an alien race to look upon Earth as a new home world for their people. Against their superior technology Earth must rely upon Sally Jameson, a scientist working for NASA. She becomes convinced that she has uncovered an alien plot against the people of Earth, she sets out to find the necessary proof to convince the authorities. However, she soon comes to the attention of the aliens who decide to kill her before she can convince her Uncle, a Texas Ranger, of the danger coming from deep space. As she battles to win so the aliens use ever more terrifying weapons in a bid to keep their presence a secret, but help comes to her from a surprising source. The fight is on, the fate of the people of Earth is the stake, the winner of this galactic contest takes all.