Midnight Rose is a Moonlight Mare, and her parents died when she was born. For some reason, she seems to be nocturnal, though the rest of the village she lives in thrives in the day. She feels she is the only one...

Several ponies have had issues in foalhood that have led to mental disorders, and none of them know why. When they meet each other, and a particular mare named Lost Soul, they may just find out.