Colonel James Baker, a stoic Top Gun jet pilot, signs on to testing NASA's newly designed spaceship. With the success of this next flight test, the spaceship Endeavor will undergo final transformation into a starship, taking astronauts to distant galaxies. The test flight is a success while in space, it's during re-entry when Colonel Baker is reminded of the meaning of test flight. Time is now running out for Colonel Baker. As this race-against-time...