Isaac is a libriomancer, a member of a secret organization founded five centuries ago by Johannes Gutenberg to protect the world from supernatural threats. Libiomancers are gifted with the ability to magically reach into books and draw forth objects.

When Isaac is attacked by vampires that leaked from the pages of books into our world, he barely manages to escape. To his horror he discovers that vampires have been attacking other magic users as well, and Gutenberg has been kidnapped.

With the help of his fire-spider, Smudge, and Len--a--a motorcycle-riding dryad who packs a pair of wooden swords--Isaac finds himself hunting the unknown dark power that has been manipulating humans and vampries alike. His search will uncover dangerous secrets and libriomancy, Gutenberg, and the history of magic....