When Ava Jones and her crew are forced to make an emergency landing on the Moon, Apollo 8 veteran astronaut Jim Borman is called out of retirement for one last mission - to fly the only rocket on Earth capable of immediate launch to the moon.Obsessed billionaire Bill Leeb has built a Saturn V replica, and is willing to donate the iconic rocket to NASA for a daring rescue. But on one condition - a condition that places Jim Borman in a moral dilemma, and will soon force a terrible choice amongst the spaceship's crew.As preparations move ahead for the rescue, the stranded astronauts make earth-shattering discoveries on the Moon that will change their lives forever.