This was quite fun and well done.  The Extincts are a 007 like team that are out to save the world.  They get sent on a mission to find and save a Siberian Unicorn horn.  Yes that is a real thing.  That is one of the things that makes this books so much fun.  While it is completely fictional, there are info bits and real life interests hidden in-between the story panels.  Some topics covered are the unicorn, towns in Siberia, and the Batagaika Pit (which I had never heard of until now.)  This book does a nice job of sneaking in the non-fiction bits that will interest a reader in more information, while also offering the standard back matter of info on instinct animals, experiments etc.  My only complaint about the back matter is, the book lists ways to help save the world and one is to stop using disposable plastic water bottles, and on the next page has an experiment that uses a disposable full plastic water bottle, and a disposable plastic cup.  I think in terms of what this book aims to accomplish, they need to change that out.