A controlling Captain has six days to finish training her student pilots before transferring to the Special Missions Team. When an astronaut mysteriously shows up on the flight deck, she is charged with teaching him to fly the same ships, which took six weeks to teach her students, but she must do it in the six days left or lose her chance to transfer. She must also discover his real reason for being on their ship. While her student is a fast learner and an Air Force test pilot, she uncovers some things about him that lead her and the Admiral to believe a sinister plan is under way to take over the Earth. Will she be able to stop this plan before it happens, or will the Earth succumb to an alien invasion?