Shadow had always been curious about old myths and legends, as a young filly it was her way of coping with a broken family. One of the things she was most curious about was the Mare in the Moon, who was the Mare in the Moon? What was her story? She had these questions, but she never truly expected them to be answered.

Then the day of the Thousandth Summer Sun celebration arrived, and the Mare in the Moon was no longer just some old legend, but a real pony. A pony that only one other pony even remembered, a pony that desperately needed a friend though she did not know how to make one.

This is how a young mare named Shadow became the Moon's friend.