When a massive creature attacks a submersible, the crew becomes trapped at the bottom of the Pacific's deepest trench. To save them from the clutches of the Megalodon - a prehistoric 75-foot shark once believed to be extinct - a visionary oceanographer (Winston Chao) recruits expert rescue diver Jonas Taylor (Jason Statham). Teamed with the oceanographer's daughter, Suyin (Li Bingbing), Taylor must try to outwit the greatest predator alive...a killer he's faced once before.