一架从洛杉矶飞往上海的国际航班，在飞越太平洋时遭遇货舱锂电池起火事故，安全系统接连失效，机长理查德与副机长本被迫驾驶飞机紧急迫降在海域。机上三十余名幸存者被困在破损的飞机残骸上，很快发现这片海域已是鲨鱼的猎场。成群的灰鲭鲨被残骸的血腥味吸引，不断发起攻击。幸存者们来自不同国家、背景各异，必须放下隔阂与猜忌，利用有限的资源搭建防御、寻找逃生机会，在茫茫大海中与饥饿的鲨群展开殊死对抗。

在美国陆军游骑兵选拔的最后阶段，一支精英团队的训练演习变成了与一种难以想象的威胁之间的生存之战。

Ben and his wife Jules are in for a surprise when they inherit an abandoned coastal property that Ben's recently deceased mother never told them about. Untouched for 40 years the house looms like an eerie relic over land which includes a stunning private cove and beach. The beauty and tranquility of the place leave the family with the nagging question: why was this property kept a secret for so long? While Jules rummages through the house looking for answers, Ben goes to repair the buried water tank, not knowing that in doing so he is unleashing a long-dormant creature, fiercely protective of its environment.