"Fourteen-year-old Sydney is a surfer and a rebel from Bondi Beach, Australia. She's also a field ops specialist for the City Spies, a secret team of young agents working for MI6, the British Secret Intelligence Service. After thwarting a notorious villain at an environmental summit in Paris, the team is gearing up for their next mission. Sydney is excited to learn that she'll be going undercover on the marine research vessel Sylvia Earle. But she's less excited when she hears that Brooklyn, the newest member of the City Spies, will be going along was well. It's not that Sydney doesn't like Brooklyn; it's just that she was really hoping that this mission would be another chance to let her skills shine. But things don't go exactly as planned, and while Sydney does find herself in the spotlight, it's not in the way she was hoping. Meanwhile, there's been some new intel regarding a potential mole within the organization, offering the spies a lead that takes them around the world and ultimately to the foggy streets of San Francisco. But as the City Spies investigate a spy who died at the botanical garden, they discover that they are also being investigated. Will the city Spies be able to find out what they need to know before their cover is blown?" -- Container.