47 Meters Down: Uncaged

In search of adventure, teenagers Mia, Sasha, Nicole and Alexa decide to scuba dive into a submerged Mayan city that is being mapped out nearby. Once inside, the entrance collapses behind them and they must navigate the labyrinthine tunnels and eerie caves in search of another way out as the air in their tanks steadily runs out. It is their worst claustrophobic nightmare, but it gets a whole lot worse when they discover the city is home to some very hungry Great White sharks...