Stalwart naval captain Matt Hendricks (Lundgren) faces imminent peril beneath the waves as he is escorting a deadly metavirus to safety on American shores. Inimitably, a gaggle of hacked-off Russian terrorists take over the submarine on which Hendricks is traveling and threaten to launch the virus on an unsuspecting populace. Together with a perky female scientist, the crusading captain must put a halt to the group's dastardly plan.