Deep inside the Everfree Forest, a feud between strange ponies known as Changelings, sparks up chaos. Queen Chrysalis, worn and broken can not manage to rule over her subjects any longer. Her daughter, Aldora, brutally takes Chrysalis' place as Queen and banishes her own mother from the Changeling kingdom. Chrysalis, now alone and fatally wounded, she has no use but to trust a medicine mare to help cure what ails her. But what if the medicine mare has other agendas in mind?