Countdown to the Year 1000 (Dragon Slayers' Academy #8)

It's the year 999 and the end of the world is coming-at least according to a mysterious prophecy.  But then Wiglaf meets a strange boy who claims to have come from the future.  It's Zack, star of the best-selling The Zack FilesTM series by Dan Greenburg, and he says he's living proof that there is life after the year 1000!