This is what I wanted to do as an adult: I want to be a ninja librarian!! I wish this book had been out when I was younger because I would have gobbled it up even more than I did now (if that's possible...). Jen Swann Downey knows exactly how to draw you into a fun fantasy full of sword fights, time travel, and librarians! 
 Dorris and Marcus are the classic picture of clashing siblings in the 21st-century. Two kids with seemingly different interests, she in being a hero and pirate, saving the world with as a sword-wielding pirate, and him wearing pajamas outside and knowing just the ways to get out of doing work. Throughout their adventure, their bond grows and we are shown many scenes of them being protective of each other. Not only does their bond grow, but they also discover things about each other that were previously unknown (ax throwing for one!). Their closest friend, Ebba, really made me smile as well. She is enough of a dreamer to believe that everyone should get along and is willing to take care of any creature she stumbles upon (human or otherwise). 
 Speaking of creatures, the world that Downey created with the Lybrarians is truly amazing. It is so well thought out and I could picture it in my head ever twist and turn. It really is the ideal place for any child with the state of mind to save the world! In my opinion it tells us that ignorance is a terrible curse and should be fought, but to be careful because the world is dangerous but if you work hard enough, you can achieve your dreams. 
 I highly recommend this book for any middle school student or anyone with a dreamer's heart. Five of five beans from me!