Over the nights, Princess Luna has been quite content with her standing as co-ruler of Equestria, even if she believes she's merely assisting her elder sister.

Recently, something catches Princess Luna's attention from the Everfree Forest. It felt unnatural and odd to her, so she sends her guards to do some recon in the forest, and what information they come back with caused the Benevolent Moon Goddess to investigate by her lonesome.