This is the e-short for the Tenth Doctor and sees him travelling with Martha Jones. From what I could gather from the references it is set somewhere towards the end of Series 3. In it the Doctor and Martha arrive in a place that looks strangely familiar to Martha, and she soon realises that is because it looks like the setting for a book she read as a child. It seems the Doctor and Martha are in a land of fiction- although not the Land of Fiction that the Second Doctor visited!
This is not the strongest of the e-shorts, largely as the plot feels a bit rushed, but it does everything these e-shorts should do- good characterisation of the Doctor and companion and a few cheeky references to the Doctor's era (here we get a quote from "Blink" and a nod to "The Shakespeare Code").
A good effort from Derek Landy for this e-short with a Famous Five-style start and a modern version of The Mind Robber to finish but one of the weaker ones of the series.