The oily and brackish waters of the Russian Northern Fleet submarine base part for the passage of the colossal special purpose Omega II-class submarine Belgorod, on a mission to hold the United States hostage. This gigantic submarine is armed with three Poseidon unmanned submersibles, each with a 10-megaton warhead. Her goal: placing them offshore in U.S. ports in a nuclear-blackmail chess move. In response, the United States dispatches the...