Describes several successful searches for lost treasure, including discoveries of sunken Spanish ships off the coast of Florida, the sacred well of the Mayas in Yucatan, and the Lost Dutchman Mine in Arizona.
When Ruth Rose and her friends, vacationing in Florida, discover that her grandmother is about to invest in a project to recover sunken treasure, they stumble upon evidence that the entire plan may be a fraud.
Diving interns Kaz, Dante, Adriana, and Star take desperate measures to reclaim the sunken treasure that has been stolen away from them by their supervisor Tad Cutter.
While learning to sail during a visit to his grandmother's at the Connecticut shore, eleven-year-old Tony becomes excited about the rumors of sunken treasure in the area and starts following a couple who seem to be making a mysterious search for something.
