Nicole, Sasha, Alexa, and Mia discover a sunken Mayan city during a dive. But their dive turns into a nightmare, as the underwater city reveals itself to be the hunting ground of enormous, deadly great white sharks. A cat-and-mouse game with the ocean's greatest terror begins. As their oxygen supply dwindles, Nicole, Sasha, Alexa, and Mia must find their way out of the underwater labyrinth of narrow caves and eerie tunnels, escaping their underwater hell. A race against time and a breathless fight for survival begins... New product