Ultramarine, a (somewhat) loyal subject of Princess Celestia, has a power that she discovered incidentally only one moon ago. Despite all of her efforts to fully activate it's abilities when she is alone, Ultramarine hasn't realized exactly what this power is. Whatever that it may be, Ultramarine thinks it could be beneficial if she is careful, but might also corrupt everything around her for from the inside out if she isn't. The young earth pony eventually decides that she won't get too…absorbed in this situation and keeps this thing hidden, but at what cost?