两个外星人的飞船意外的坠毁在地球上,它们必须找到坠毁时遗落的武器,因为这个武器有毁灭地球包括它们自己世界的强大威力...When two aliens fighting against each other in their spacecrafts crash on Earth at Area 51, a military group goes to the location but they are killed. The former military Jake Townsend seeks news from his brother in the base where his brother serves, and stumbles with the alien Jude. He is wounded and explains that he needs to find a weapon before the other alien, Kronnan, activates it to destroy Earth. They team-up with Jake's former girlfriend Monica Gray to search the weapon while they are hunted down by Kronnan and a paramilitary team. But when Jake meets Kronnan, he tells that Jude is the one who intends to activate the destructive weapon. Who is telling the truth?