She had been worried about Luna for some time now. At first she feared her sister had slipped back into melancholy once more. Celestia had made the mistake of letting sleeping ponies lie before, and she swore to never do so again. When she had pressed her sister, she had learned the cause of her unease: a strange occurrence near a harbour town in the west. Luna was quite unnerved – she had only became aware of it because of a subtle wave of energy that had washed over her, and even then she had only noticed it because she had been in a magical trance, extending her senses.