After fixing up his Tardis, the Doctor decides to take it out for a spin with Derpy. However, after an incident occurs, he meets some old faces that he would rather not meet again. Will the Doctor and Derpy be able to set the timeline back?

(This story contains some references to Doctor Who; however, you do not need full knowledge of the show to understand this story. All you need to know is that Doctor Whooves will be referred to as the Doctor like in the show.)