Sun, Oct 2, 1960
Jimmy falls down a shaft into an underground cavern, where the team finds another spaceship similar to the one in orbit around the moon. Meanwhile, the MR-1 crew arrives at the MR-2 ship, but the MR-2 crew is not there--will they be found before their air runs out? Also, Valerie makes a shocking discovery.
Sun, Oct 16, 1960
The crew finds a video recording in the alien spaceship, which tells them of the sad fate of the civilization that visited the moon 400 million years ago, and gives a surprising clue to their identity. Meanwhile, a meteor shower destroys the MR-1 mothership. Can they use MR-2, not designed for a return voyage, to get back to Earth?
Sun, Oct 23, 1960
The MR-2 supply ship leaves for Earth, with only one adult and one child aboard--that is all it can carry. The rest of the crew stays behind in the cavern, learning as much as they can about the ancient visitors before the air runs out. But does the ancient spaceship left behind by the visitors still work?