Sadie and Jacob have won the opportunity of a lifetime - a chance to work in an underwater research station in the Coral Sea. Sadie dreams of becoming a world-famous systems thinker, and Jacob wants to save the planet with renewable technologies. They are lucky enough to witness the underwater turbine that powers the station being turned on for the first time - except when the switch is flicked, nothing happens. Sadie and Jacob are in a race against time to find out what - or who - broke the turbine. Because if they can't fix it, their next breath could be their last

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