The Cutie Map is back to normal after Starlight Glimmer's time travel escapades. Which means the Spirits of the Map now have more missions for the Mane 6 to fulfill.
Turner's feeling down after a TARDIS malfunction, so Derpy decides to cheer him up with a surprise party. What will go first: the surprise or Turner's happiness?
The Doctor, now Time Turner, is getting along quite comforatbly in Equestria with his new friends. But when a string of disappearances occurs in Ponyville, it's up to everyone to solve the mystery of the who, where, what, and why.