Vesperquines—batponies—have faithfully guarded Equestria's night for a thousand years. Apart from Celestia, they alone have kept the memory of Princess Luna alive in their hearts. And they alone know of their failure, of how they were not the friends she needed when jealousy and despair gnawed at her.

They pray for a second chance. They vow to do better.

And then, one night, miraculously, she returns.

But the princess whose memory they cherish is still lost to her mad fury. And for a young recruit of the Night Guard, the nightmare has just begun.

A selection of the Royal Canterlot Library!