This is a parody of Doctor Who and the book Eats, Shoots and Leaves, which I have never read, but I understand is a humorous book about punctuation.
As a parody of Doctor Who, it's ok but certainly not great. There are some funny moments, but far more moments that ended up being awkward or just not working.
One of the ideas which didn't work, for me, was the author's idea to jumble the chapter order - the book opens with Chapter 12 (the final chapter), followed by Chapter 2, then Chapter 1, etc. The table of contents does list the chapters in the order they are found within the book, so it is possible to read them in order and get a more linear story and, had I known what to expect before I started, I may well have done that. However, the book is not so long, or complex, that it was difficult to follow the story anyway. I understand the author's intentions in doing this, but I don't think it worked.