HISTORY UNDER ATTACK Hundreds of ships carrying thousands of Viking warriors are attacking medieval Paris. The Parisians are fighting back, but they can only hold out for so long. And that's bad news - especially since Dak has been captured and forced to work with the invading army while Sera and Riq defend Paris from within. No matter which side wins, the kids will lose... unless Dak can find an ally among some of history's fiercest warriors. Each book comes packaged with a full-color, collectible Hystorian's Guide -- your key to unlocking an all-new online adventure starring Dak, Sera, and Riq. You'll need all of the Guide's hints, secrets, and codes to navigate the richly immersive worlds of Revolutionary Paris and other soon-to-be-revealed locations in a totally unique, story-driven gaming experience.
