500 feet beneath the ocean’s surface, the U.S. ballistic ракета submarine Colorado receive their orders. Over a radio channel, designed only to be used if their homeland has been wiped out, they’re told to огонь nuclear weapons at Pakistan.

Captain Marcus Chaplin (Andre Braugher) demands confirmation of the orders only to be unceremoniously relieved of duty by the White House. XO Sam Kendal (Scott Speedman) finds himself suddenly in charge of the submarine and facing the same difficult decision. When he also refuses to огонь without confirmation of the orders, the Colorado is targeted, fired...