A claustrophobic survival thriller set beneath the Yellow Sea off the coast of North Korea where the pilot of a small submersible craft and a three man Special Ops team on a secret recovery mission become trapped underwater in a fight for survival.

　　蒂姆 韦伯在其父亲去世后回到了位于萨默赛特的童年小屋，去寻找打破乡村宁静生活的不详之物。