Two sisters go diving at a beautiful, remote location. One of the sisters is struck by a rock, leaving her trapped 28 meters below. With dangerously low levels of oxygen and cold temperatures, it is up to her sister to fight for her life. 　　译文(2): 两姐妹在一个美丽偏僻的地方潜水。其中一个姐妹被石头击中，被困在28米深的地方。由于氧气含量极低，温度低得危险，她的姐姐必须为自己的生命而战。