Josie Black can infiltrate any building, speak a dozen languages, and fight like a martial arts master. But no one told her that. After J.B. detects gaps in her memory, her mom reveals the truth: she works for a covert agency, and she's given J.B. the skills of a super spy. After J.B. freaks out, runs off, and tries to escape the weird world of espionage, she'll have to decide who she wants to be.