You are part of the first colony of Earthlings on the moon, which you and the other colonists call Luna. You are a student, but you also work two jobs: as a tour guide for visiting Earthlings, and as a research assistant at the geology labs. Life on Luna is full of wonders. You live under a pressurized plastic bubble, where indoor gardens produce food and oxygen. Your instructor at school is a computer-generated hologram, and you download all your textbooks into a tiny computer that you wear on your wrist. Yet you yearn to venture outside the safety of your colony's community to the moon's dark side. The secrets that lie there could advance civilization beyond your wildest imagination -- or destroy it forever.

If you decide to go on the mission to the dark side of the moon, turn to page 98. If you want to act as tour guide to the visiting delegates from Earth, turn to page 35. Consider your choice carefully. You've never been to Luna's dark side before. But being a tour guide for these important Earthlings could mean that you will be present when history is made on Luna.

What happens next in the story? It all depends on the choices you make. How does the story end? Only you can find out! And the best part is that you can keep reading and rereading until you've, had not one but many incredibly daring experiences!