Once in a while, darkness came over Ctamville. For over a month, the darkness scared ponies, made them sick, made them die. Until one day, a little SHINE pushes trough the darkness. There, was standing a stallion, cyan blue fur, dark blue mane and tail and a book cutie mark. Everypony was looking to him, when he slowly walked into the darkness ... and then stripes of light breaking trough it, destroying the darkness and all evil with it. The pony was screamed as a hero, but as suddenly he came, he suddelny was disappeared again. Non of the Ponies never knew, where he went, but there a legends, that a rainbow pony lives hidden with him and they have a foal too. Who this stallion was was never known and find out, so only the legends can remember what happened 25 years ago.

But one thing where right, short after this, he met a rainbow pone, she smiled and he smiled back

And that kids, is how I met your mother.