Secrets of a Rainbow

Rainbow Dash asks for help from Shady when Scootaloo goes missing and they stumble upon a new world, and an abandoned village on the verge of collapse. That is where RD runs into a pony that claims to be her, saying that Rainbow stole her life. Now she says she wants her life back and the only way to do that is to get rid of her, revealing she kidnapped Scootaloo to lure Rainbow Dash there so she can murder her and return back to popularity. So now Rainbow Dash and Shady must battle the past generation not only to save Scootaloo, but to stay alive.