Synopsis: The first mission to Mars crashes onto the surface of the planet. The astronauts are faced with a dire situation. With no resources and no time to wait for the rescue team to arrive, they have just one alternative: three must die so that the other two can survive. But who will live and who will die?
The story takes us, with the detail of a documentary, on the adventure of the three crew members who decide to die to let thier team-matres survive.They cover the distance separating them from Mariners Valley and descend into its depths, where they find, hidden under a permanent layer of fog, agreat mystery about the planets distant past and a chance for survival.