The Devil's Mouth

A group of college friends' Thailand adventure turns deadly when they become trapped in submerged caves with a bull shark. As oxygen runs low, past conflicts emerge in their desperate fight for survival, and Sara treats her injured friend Adrienne. A ravenous bull shark stalks the group as they try to escape the flooded cave system, but their navigation is hindered by Max's control-freak tendencies, and ultimately, the friends succumb to the shark's attacks.