When an ancient artifact and a little boy go missing, Nancy and her friends are on the case. The artifact may prove that the Chinese discovered America prior to Columbus, but someone doesn't want that knowledge public and is out to stop Nancy, permanently.

"Eating candy nonstop and watching TV all day sounds great . . . until you actually do it, as the kids of Bayport High find out when all the adults vanish, and the world's greatest (high school) detectives--the Hardy Boys and Nancy Drew!--have to team up to solve the mystery! Whether it's going under cover, sneaking out at night, chasing weird buses, or following a strange smell, they know it'll take all their wits and smarts to get their parents...