A high-tension sea chase set in early 1941 that pits the warships of the British against the German battle cruisers Scharnhorst and "Gneisenau" which have been able to escape trap after trap. What makes the British most frustrated is the fact that their enemy has on board a large Siamese cat named Attila, who provides his shipmates with extraordinary accomplishments that has enabled the Germans to escape time and time again. The Germans are wrecking havoc on British shipping and Winston Churchill has demanded that they be sunk before their toll on merchant shipping brings England to the brink of disaster.