The U.S. USS
Tampa Bay, disappears while shadowing the Russian RFS
Konek, in the
Barents Sea. Rear Admiral John Fisk orders the newly promoted and unconventional Commander Joe Glass to lead the investigation on board the . At the same time, Lieutenant Bill Beaman leads a
Navy SEAL team on a covert mission to observe a Russian naval base in
Polyarny, Murmansk Oblast. At the base, the SEALs witness Defense Minister
Admiral of the Fleet Dmitriy Durov staging a
coup d'état and capturing Russian President Nikolai Zakarin. They quickly realize that Durov's intention is to instigate a war. The SEALs narrowly avoid detection during a radio intercept check by the Russians but Martinelli is shot in the leg by a Russian officer who blindly fires at their concealed position. Consequently, the team is forced to leave him behind. Meanwhile,
Arkansas makes a distressing discovery as they come across the wreckage of
Tampa Bay, with no survivors found. Additionally, they stumble upon the sunken Russian submarine
Konek, which appears to have been damaged from within, indicating possible internal sabotage rather than an external attack. Their situation takes a turn for the worse when they are ambushed by another Russian submarine, the
Akula-class submarine RFS
Volkov, which had been concealed beneath an iceberg. It becomes evident that
Volkov was responsible for the unprovoked torpedoing of
Tampa Bay. However,
Arkansas manages to retaliate and successfully rescues the Russian survivors from
Konek, including their commanding officer,
Captain 2nd rank Sergei Andropov. The U.S. government uncovers the coup, leading Admiral Charles Donnegan to recommend war preparations. However, Fisk suggests that
Arkansas should rendezvous with Beaman's team once they rescue Zakarin. Glass persuades the hesitant Andropov to provide assistance and must also convince his crew to accept Andropov's presence and trust him. Utilizing Andropov's expertise in navigating the challenging underwater terrain and the minefield guarding the base, Glass successfully guides
Arkansas near the base undetected. Beaman's team manages to save Oleg, an agent of the
Russian Presidential Security Service, who was previously shot while protecting Zakarin by Durov's men. They work together to infiltrate the base and successfully retrieve President Zakarin, but lose Oleg, Devin Hall, and Matt Johnstone in the process. With Martinelli providing sniper cover, Beaman brings the injured president to
Arkansass
deep-submergence rescue vehicle and then returns alone to rescue Martinelli. As the U.S. and Russian fleets prepare for battle,
Arkansas suffers more damage when it is attacked by the
Udaloy-class destroyer RFS
Yevchenko, Andropov's old ship, which is now under the command of Captain Vlade Sutrev, a member of Durov's conspiracy. However, Andropov manages to convey a message to the
Yevchenko that President Zakarin is on board the submarine. When Durov instructs his forces at the base to fire missiles at the surfaced
Arkansas, Glass refuses to take action, realizing that retaliating could initiate the war he is trying to prevent. In the final moments, Andropov's former crew disobey orders and successfully destroy the incoming missiles with their
close-in weapon system before they can hit the
Arkansas. They then proceed to destroy the naval base headquarters with their own missiles, killing Durov. With the war avoided, Glass docks the
Arkansas at the Russian naval base to return Zakarin and the surviving
Konek crew members to their country. The
Arkansas picks up Beaman and Martinelli and leaves Polyarny, escorted by the Russian Navy. ==Cast==