49th Parallel

In the Gulf of St. Lawrence, U-37, a German U-boat, sinks a Canadian freighter, then evades the RCN and RCAF by sailing into Hudson Bay. While a raiding party of six is ashore in search of food and fuel, the U-boat is sunk by RCAF bombers. The six survivors set out for the neutral United States.

A World War II U-boat crew are stranded in northern Canada. To avoid internment, they must make their way to the border and get into the still-neutral U.S.