Benny's StoryProfessor Bernice Summerfield has been hired to excavate a deserted coal mine on a distant planet. She finds a TARDIS key. Guess whose? Yes, the Eighth Doctor turns up—but he's not the one Benny's sponsor is after.
Fitz's StoryAlien Defence Industries, Ltd., has a celebrity spokesperson: the Doctor. Or, rather, a poor simulacrum of the Doctor. Not amused, the Doctor turns up to put a stop to it. While he's being captured, Fitz convinces the media that he's the brains of the operation.
Izzy's StoryIzzy persuades the Doctor to take her back to her childhood, so she can get a super-rare comic.
Mary's StoryOn a summer night in 1816, Mary Shelley meets the Doctor.