Captain Horatio Hornblower leads his ship HMS Lydia on a perilous transatlantic voyage, during which his faithful crew battle both a Spanish warship and a ragged band of Central American rebels.
Hornblower and his comrades come under the command of a revered but mentally unstable captain and are forced to mutiny in order to save their ship, the HMS Renown.
A team of allied saboteurs are assigned an impossible mission: infiltrate an impregnable Nazi-held island and destroy the two enormous long-range field guns that prevent the rescue of 2,000 trapped British soldiers.
In the midst of World War II, the battle under the sea rages and the Nazis have the upper hand as the Allies are unable to crack their war codes. However, after a wrecked U-boat sends out an SOS signal, the Allies realise this is their chance to seize the 'enigma coding machine'.
A close friend of MacGyver is murdered. In searching for a reason for this assassination MacGyver discovers a secret nuclear weapons plant right in the center of Britain.