Applejack has problems, problems she has never revealed. As a strong, dependable pony, she has always managed to deal with them on her own. But now, having broken down in her friend's presence, she's not so certain of her strength - and more and more troubles appear...

On an average Equestrian day a horrible tragedy occurs, leaving all the ponies, used to living in a perfect world full of love, in a struggle to survive at all costs.