Foreign lifeforms appeared from the Bermuda triangle and has been ravaging the marine traffics around the world, isolating one continent to another, mankind have tried to counterattack the aliens with their Naval forces, but the alien's technologies are far more advanced for the navy to handle. Thus the commanders came up with the unthinkable, fighting off advanced technologies with outdated warships

HMS Rodney, somewhere in north Atlantic. Chloe is on patrol that soon turned into an ambush