Twilight Sparkle has gone into a coma. While her body rests, she must travel through the Dreamscape to regain her magical powers and find a way back to reality. With a witty draconequus watching over her, Twilight faces Fate itself to fight for her life. (Side story to My Faithful Student)

Also, here's the image source: http://www.youtube.com/watch?v=oHCDO7pQjVc