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.

Ready for some real adventure? Chloe's adventurous, popular...and a litter bug. The world's big enough that she's sure a bit of rubbish doesn't matter. But then her sailing boat capsizes and she's washed up like flotsam and jetsam on a remote surf-swept beach. With Bear Grylls as her guide, together they must survive quicksand, dangerous tides and watch out for marine life under threat...Will Chloe discover that in the wild, you need to respect nature...