Four teenage girls go on a diving adventure to explore a submerged Mayan city. Once inside, their rush of excitement turns into a jolt of terror as they discover the sunken ruins are a hunting ground for deadly great white sharks. With their air supply steadily dwindling, the friends must navigate the underwater labyrinth of claustrophobic caves and eerie tunnels in search of a way out of their watery hell.
Keywords: altar , animal-attack , cave-diving , creature , diving , eaten-by-animal , great-white-shark , maya-civilization , mexico , ruins , scuba-diving , sequel , shark , shark-attack , teenage-girl , underwater , water-monster