Four divers. One treasure. One incredible challenge. Kaz, Dante, Adriana, and Star aren't the best divers in the world. But they've been chosen to spend the summer exploring the depths of the sea. There are only a few problems. First, the sharks. Killer sharks. And then the fact that the people running the program are covering up something big... and mysterious. These four kids are about to make the discovery of their lives -- and put themselves in...

Having survived being blinded and shipwrecked on a tiny Caribbean island with the old black man Timothy, twelve-year-old white Phillip is rescued and hopes to regain his sight with an operation. Alternate chapters follow the life of Timothy from his days as a young cabin boy.