World War II begins, and Commander Ericson is tasked with leading a convoy escort, HMS Compass Rose, staffed by newly trained officers and crew. The harsh winter weather adds to their struggles, as they face the daunting task of rescuing survivors from U-Boat attacks, often without the ability to retaliate. The traumatic experiences they endure foster a strong bond between the captain and his first officer, amidst atmospheric and intense sea footage.

The Cruel Sea
The stalwart British convoy escort ship, with its courageous officers at the helm, bravely navigates the perilous seas of World War II.