三位朋友，拍摄一场极限真人秀的录像带，进入了鲨鱼笼潜水，但是没想到，很快会变成一场灾难性的转折，把他们留在巨大的白色鲨鱼出没的水域，把他们的录像变成一本关于生存和死亡的冷血日记。...

　　Recently released ex con Patrick is unable to find a legitimate opportunity to get ahead and stumbles back into a life of crime when unpredictable Dolph, whom he owes for protection while in prison,...