In view of the novel composed by CS Forester and entitled “The Good Shepherd”, the film follows a US Navy leader on his first war crucial, the center of World War II during the Battle of the Atlantic, as he drives a military escort maritime, being sought after by German submarines. During World War II, a universal guard of 37 Allied boats, drove by Commander Ernest Krause, crossed the North Atlantic while German submarines prowled. As he goes up against the adversary, Krause must battle his own devils to be a powerful pioneer of the Allied side.