Rebel surfer-turned-field ops specialist Sydney finds herself in hot water while undercover on a marine research vessel, while her City Spies teammates investigate a suspected mole.

Fourteen-year-old Andrea Hernandez-Baldoquin hails from a family of spies working for the factory, an international organization dedicated to protecting people of color. Andrea has dreamed about getting her first solo mission, but she never imagined that she would have to straighten her hair and go undercover as a white girl to befriend the estranged son of a dangerous white supremacist. In order to gain the boy's trust, Andrea finds herself doing...

While Paris keeps watch over the son of a North Korean nuclear physicist who Umbra has their sights on, Sydney follows the daughter of a British billionaire on tour to uncover what links both the band and the billionaire to an old Soviet missile base.