Many ponies think they know Princess Celestia. She's kind, warm, a giver and protector, much like the sun itself. What many ponies don't know is that Princess Celestia isn't as put together as ponies think she is. Actually, she's barely holding on, and during the day meant to celebrate the day she met someone important to her, someone she wants badly, she finally hits her limit and breaks down.

If she were a normal pony, this would be okay. But she's not. She's an alicorn. And Princess Luna fears that she could fall into a darkness very much like she did, becoming something much worse than Nightmare Moon. Desperate to save her sister before she falls into her darkness, she reaches out to the one pony she feels knows Celestia the most.

Her former student.

Now its up to Twilight to help Celestia in her darkest time. She's never seen Celestia in such a state, and seeing her so devastated scares her almost as much as the idea of her becoming something worse than Nightmare Moon. What she doesn't know is that the shadow around Celestia is getting stronger, and its taking the form of someone from her past. Will Twilight be able to protect her former teacher from this darkness?