What happened if you had a problem you couldn't fix? When a mare is striped of her age, her cutie mark, and her memories, she can't remember what happened. There's nothing wrong with her as far as she knows, she's just a normal filly with no cutie mark and many dreams. But when memories start to flood back as nightmares, and one of the mares in town starts to recognize her, how long will it be till she remembers who she is? And the other question, when she realizes who she is, will she want to go back?

When the doctor lands in ponyville, he must find a new assistant, his tardis, and of course help the citizens of Equestria. This time it just happens to be a personal matter. A personal matter of Princess Celestia's. After the fight Celestia accidentally went to far and imprisoned Nightmare Moon in the moon. Without a way of getting her sister back she asks a strange stallion that recently appeared in town to help her.