Outlaws are defying international treaties and killing Great White sharks! Tyler and Alena Worthy are scuba diving in Southern California when they get the emergency call. The twins are the leaders of the Aquatic Investigative Unit(AI) of the Save Our Seas Foundation. Their mission: help preserve the fragile environmental balance in the world's oceans--no matter where it takes them, no matter how dangerous it is. This time it takes them half way around the world to the beautiful islands off South Africa's east coast. They have the help of local SOS members, a submarine full of high-tech gadgets, and their scuba-diving dog Brutus. In seas swirling with more Great Whites than they've ever seen, the AI team confronts the outlaws. But which do they need to fear most--the outlaws or the sharks?
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