December, 1975, Apollo 23 lifts off and Wendy Pendleton fulfills her dream of becoming the first woman on the moon. She and her crewmate Ray McPherson explore the lunar south-pole and its rich deposits of ice. But an act of sabotage may mean that the two astronauts who came to the moon in peace for all mankind may rest in peace on the lunar surface. Their only hope is a daring rescue mission using a commercial space shuttle outfitted for an emergency lunar voyage,