After a long time of traveling alone the Doctor falls out of his universe and lands in a strange land full of strange creatures and even stranger forces. How will he react to magic? And what will he do when a local befriends him?

At the end of the movie Back to the future. Marty Mcfly is left by Doc Brown in his time train , Marty realizes he has got to find his friend, he finds a machine that sends him across the universe and drops him in the Tardis from doctor who, The Doctor and Marty try to find doctor brown who gives them a tour of the new time train. Which sends them bouncing between dimensions. Picking up friends like Twilight Sparkle and Ditzy Doo to help save the universe from collapsing within its self.

David Tennant, once the tenth Doctor, retired. Or so, he was supposed. He was asked to come to a con dressed as Ten which he did. Nothing compared to his surprise at a perfect replica of the TARDIS. He asked the man how much it was. A measly amount for a beautiful recreation. He opens the door steps inside, and its black.
The last thing he remembers is the Merchant grinning at him and looking at a screen.

Cancelled, for now.

A perfect day in Equestria. Applejack and Rainbow Dash are racing. Rarity is making a new dress line. Twilight Sparkle and Fluttershy are busy making new magical foods for Fluttershy's pets and all of the friends are planning to end the day with a nice picnic in Sweet Apple Acres. All of which may change when the hear that unmistakable sound of the legendary Tardis which lands right in the middle of Sweet Apple Acres. What will follow the Doctor is unknown but what is known is that Equestria will face a foe like no other.

Derpy has never seen the Doctor regenerate...until now. As the Doctor is regenerating, something strange happens: He turns into a mare. Now he has to learn how to deal with his new body and stop a threat against Celestia and all of Equestria.

* This Story has been rebooted

Sunset Shimmer is a school bully in the making, The Doctor is a intergalactic hero, clearly these two couldn't become companions right? Right?

Co-Writer: Doc Grant, Disavowed Ash