This is the one where the Doctor helps the Doctor, the Doctor, the Doctor, and the Doctor break onto the set of Doctor Who! Oh and steal their own costumes from a Doctor Who museum.
This is the one where the Doctor and Clara and the Doctor and Queen Elizabeth and the Doctor and Billie Piper having an identity crisis all team up to NOT actually destroy all the Time Lords, but actually destroy all the Daleks, except for the thousands and millions that we already know actually survived. But don’t worry, we won’t remember any of this later, it’s all very timey-wimey.
This is the one where the Doctor and Clara discover there’s no such thing as ghosts except when there is but really it’s aliens, well, two aliens and one time-traveling human that’s the great great great great great great great great great granddaughter of the couple that haven’t gotten together yet. It’s a love story!