Johnny, Nancy, and Ackers find themselves with the dangerous task of guarding the Super Chip so it won't fall into the United Order's hands. There's only one problem: Ackers has swallowed the Chip. Johnny and Nancy do their best to protect him while putting up with his complaints as external agents close in on them. To top it all off, Nancy's motives become more and more suspect, leaving Johnny to face the very real possibility that she could be a threat.
Undercover missions, lots of fun to read, and the more books that come out the better. I love long series and don't like them to end. I highly recommend this series.