Mark Williams' routine day is interrupted when a Navy Officer arrives at his office. He requests that Mark fly to the aircraft carrier U.S.S. Ronald Reagan, which is stationed in the Pacific Ocean over the Marianas Trench. In the ocean depths hides an unidentified object that streaked in from space, nearly hitting the carrier battle group. When Mark arrives, his skepticism of UFO's is challenged when he experiences confusing alien visions. Mark must decipher the meaning of the alien visions and determine what message they are trying to send. As the visions continue, he soon learns that he is not just watching the visions, he is living them, but there is no guarantee that he will survive the visions or that Earth will survive if he does not continue.