Marine biology always interested the young sleuths, but Jack and Shivani never realized that the depths of the sea had some sinister secrets as well. A case of mysterious kidnapping forces young sleuths to rack their brains, as their clue leads them deeper and deeper into the sinister depths of the ocean. Soon, they are enveloped in the swirling waters of conspiracy and their very survival is at stake. Would they be able to unravel the mystery that surrounds the murky waters, or would they drown while doing so?
