A quarter century the staggering outsider attack, the United Nations has set up the Earth Space Defense, a worldwide barrier and research program that figures out outsider innovation and fills in as Earth's initial cautioning framework against extraterrestrial threats. As the twentieth commemoration of the intrusion approaches, ESD Director David Levinson meets with warlord Dikembe Umbutu and Dr. Catherine Marceaux in the African state Republique Nationale d'Umbutu.

They go to an in place outsider city destroyer and find that outsider survivors sent a trouble call to their home world before their annihilation. It is uncovered that previous U.S. President Thomas Whitmore, Dr. Saline Okun and Umbutu are clairvoyantly connected to the outsiders taking after individual experiences and have dreams of a unidentified round question. A unidentified round city destroyer transport rises up out of a wormhole close to Earth's Moon, and in spite of complaints from Levinson, is pulverized on the requests of the world's Security Council.

Challenging requests, American pilots Jake Morrison and Charlie Miller then get Levinson, Marceaux, Umbutu, and U.S. government controller Floyd Rosenberg on a space pull and they set out toward the destruction in the Van de Graaff hole, where they recoup a huge compartment. An outsider mothership all of a sudden appears, reacting to the trouble call, and continues to devastate a great part of the Earth's planetary safeguards before arriving over the north Atlantic Ocean where it begins to bore into the Earth's liquid center. Barely getting away passing, those on board the space pull can keep away from catch and come back to Area 51. Whitmore, Levinson, and U.S. General Joshua Adams' gatherings examine one of the outsiders held in bondage at Area 51's jail office from the war.

They discover that the outsiders exist in eusociality and that one of their monster Queens is charging the intrusion. Levinson speculates that, on the off chance that they execute the regulating Queen, her powers will stop penetrating and withdraw. An ESD elevated armada, drove by Captain Dylan Hiller, stages a counterattack, yet they are gotten in a trap inside the mothership, leaving just a couple of survivors, including Dylan, Jake, Charlie, and individual ESD lieutenant and Chinese pilot Rain Lao.