This book is essentially a round-up of a huge collection of Old World of Darkness metaplot elements, updating the metaplot for twenty years later and revisiting many locations in the World of Darkness as Beckett wanders around poking his stupid nose into everything.
This is a book full of interesting locations and new takes on old problems, as well as a bunch of fascinating bits of new stuff, including the secrets of the vampires of South America, the Drowned Lineages, and hints at a new take on the vampires of Africa. Other elements get re-envisioned for the modern world, so that the most famous transgender vampire is no longer a tentacled sex murderer, which I think we can all be happy for. (They are now just a regular murderer.)
If you wanted a book where Beckett travels the world and people make fun of him because he prints their emails out and glues them in his diary, this is that book. If you wanted a book that weighs less than one million pounds, this is not that book. Thing is huge. But if you love huge books, that will just make you even happier.