-The USS Colorado receives orders to launch nuclear missies at Pakistan. When the orders come through secondary channels, Capt. Marcus Chaplin asks for further authorization.
-He is quickly relieved of duty. When his XO also hesitates to fire, their sub is fired upon by another US ship. They take evasive maneuvers and hit the sea floor. 12 crewman are killed.
-The crew surfaces and lands on a small island with a Nato observation station. There's a SEAL team on board the sub who are hiding something from the Captain and the locals are unhappy that the subs crew is occupying their home and abduct two crew members.
-The US releases a statement saying that Pakistan sank the USS Colorado and then they fire nuclear missiles on Pakistan.
-In Washington D.C., Kylie Sinclair gets a text from an inside source giving her a heads up when the Captain is relieved of duty. She has a prototype for a magnetic blocking device on board the ship.
-Kylie tracks down Admiral Sinclair whose daughter is serving on board the USS Colorado. She accuses him of sinking his own daughter's ship, then realizes he is not involved.
-When another missile is fired against the Colorado, Capt. Chaplin fires a nuclear missile at Washington D.C.. The missiles heading towards the Colorado are aborted and the one headed towards D.C. lands in the ocean.
-Capt. Chaplin records a video describing their plight to the world but, much to his crew's dismay, he wonders if they will have to make a new life on the island.