There are unicorns on the moon.

Her grandmother's words had entranced Twila as a little girl. Tales of the ethereal unicorns that populated the moon were all she had wanted to hear. And now, Twila was on her way to the moon to see them.

The Lunae Corporation was founded by Twila's grandfather and now was run by her father. Twila was now allowed to join the company on her first expedition voyage to the moon.