It stars James Franciscus, Elizabeth Shepherd, and Ronald Allen[1] in a story about British Motor Torpedo Boats in the Mediterranean in World War II.

[3] The film's technical advisor was Lieutenant Commander Ian Nagle Douglas Cox, who was awarded the Distinguished Service Order while serving in HMS Malcolm in 1940.

Jeffords is granted permission to take his friend Chief Petty Officer Yacov (Reuven Bar-Yotam), a Jewish Palestinian, with him.

Jeffords' mission is to destroy a former Italian submarine base in Augusta, Sicily, that now contains the German's Fritz X glide bombs that have been taking a heavy toll of British shipping.

By sending a false radio message that General Alexander's aeroplane has gone missing in a certain area, Jeffords and crew pose as survivors of the crash then capture the boat attempting to pick them up.