Part of my AU.

Luna visits an old castle out in the far east of Equestria, only to discover a systemic issue that had been concealed from her for…years. Batponies are a growing species, and despite lack of attacks from them, ponies seem to take a xenophobic stance towards them due to their differences.

Luna and Fluttershy want to change that and let batponies live in peace.

TW.