Barents Sea, August 12th, 2000. Throughout a Russian naval train, and after struggling a critical accident, the Ok-141 Kursk submarine sinks with 118 crew members on board. Whereas the few sailors who’re nonetheless alive barely handle to outlive, their households push for correct info and a British officer struggles to acquire from the Russian authorities a allow to aim a rescue earlier than it’s late. However basic incompetence are towards all their efforts.