Q:Build a movie plot around this: How long were the two survivors together? does not say exactly
A:
Enemy Mine opens to a panorama of outer space along with an opening monologue by Willis Davidge (Dennis Quaid). In this monologue he says that all of Earth's nations had achieved peace by the end of the 21st century, and had begun working together to explore and colonize outer space. Unfortunately, Earth wasn't alone out there. Earth colonists encountered a race of alien nonhumanoids known as the Dracs, were laying claim to some of the richest star systems in the galaxy. Dispute over who was where, first, and who had 'legal right' to where, led to battle and finally war between Earth and the drac people.The scene shifts to an Earth space station out in space, far from the Solar System. Four Drac fighter ships approach to begin a raid. Earth's fighter pilots scramble to defend the station; among them are Davidge and his co-pilot, Joey Wooster (Lance Kerwin). The dogfight appears to be going well for the Earth defenders until six Drac fighter ships arrive to join the battle. One of the Drac fighters destroys an Earth fighter, Echo Six, killing its two pilots. Infuriated, Davidge recklessly pursues this Drac ship away from the rest of the battle, but this Drac pilot proves to be an ace flier, deftly dodging several laser volleys. Wooster tries to warn Davidge that their ship's engines are overheating and they are closing over the planet Fyrine IV, which is unexplored territory. But David is obsessed with destroying the Drac ship and its pilot. Finally he scores a hit to the Drac ship's wing, damaging it but not destroying it. Completely single-minded now, Davidge continues pursuing the Drac ship into the upper atmosphere of Fyrine IV. He sees the Drac pilot eject from its ship, and then loses sight of both pilot and ship in the thick fog of the upper atmosphere. Finally the fog cloud breaks to show the abandoned Drac fighter ship directly in front of Davidge's ship. With no time to move, he collides with the Drac ship, damaging his own ship to where he must make a crash landing of his own on Fyrine IV's surface....