After he's attacked on the street at night by a roving motorcycle gang, timid bookkeeper Casey (Jesse Eisenberg) joins a neighborhood karate studio to learn how to protect himself. Under the watchful eye of a charismatic instructor, Sensei (Alessandro Nivola), and hardcore brown belt Anna (Imogen Poots), Casey gains a newfound sense of confidence for the first time in his life. But when he attends Sensei's mysterious night classes, he discovers a sinister world of fraternity, brutality and hyper-masculinity, presenting a journey that places him squarely in the sights of his enigmatic new mentor.

After he's attacked on the street at night by a roving motorcycle gang, timid bookkeeper Casey (Jesse Eisenberg) joins a neighborhood karate studio to learn how to protect himself. Under the watchful eye of a charismatic instructor, Sensei (Alessandro Nivola), and hardcore brown belt Anna (Imogen Poots), Casey gains a newfound sense of confidence for the first time in his life. But when he attends Sensei's mysterious night classes, he discovers a sinister world of fraternity, brutality and hyper-masculinity, presenting a journey that places him squarely in the sights of his enigmatic new mentor.

Against all logic, the competitive swimmer, Haley, drives into the mouth of a furiously destructive Category 5 hurricane on a collision course with her hometown of Florida, to check in on her estranged father, Dave. There, in their weather-beaten house amid a rapidly sinking and alligator-infested town, Haley and her father find themselves trapped in the labyrinthine mess of their flooded crawl space, where a merciless pair of six-metre predators is silently stalking them. Now--as Haley and Dave are gasping for air in the claustrophobic basement--only their will to survive can help them stand a chance against the scaly adversaries' powerful jaws. Can they escape without getting eaten alive?

Against all logic, the competitive swimmer, Haley, drives into the mouth of a furiously destructive Category 5 hurricane on a collision course with her hometown of Florida, to check in on her estranged father, Dave. There, in their weather-beaten house amid a rapidly sinking and alligator-infested town, Haley and her father find themselves trapped in the labyrinthine mess of their flooded crawl space, where a merciless pair of six-metre predators is silently stalking them. Now--as Haley and Dave are gasping for air in the claustrophobic basement--only their will to survive can help them stand a chance against the scaly adversaries' powerful jaws. Can they escape without getting eaten alive?