In 1893, Betty Brown meets debonair young naval officer Lieutenant Summerville and falls in love with him. They have a brief affair until he has to rejoin his ship but as they part, Betty tells him they should not meet again because they are from different social classes and so a marriage would never succeed; however, he gives her a prized watch which is a family heirloom. Later, Betty discovers she is pregnant, but she conceals the pregnancy from him; she gives birth to a boy, Albert Brown, and raises him alone. He joins the Navy as soon as he is old enough, while Summerville, by then a captain but not recognizing the boy as his son, presents him with a sports cup for boxing on his graduation from a naval school. Brown's ship, HMS
Rutland, is posted to the Pacific, where in port they encounter and socialize with the crew of a German
armoured cruiser, the SMS
Zeithen. Shortly afterwards, the First World War begins, and at sea
Rutland again encounters the much more powerful
Zeithen, which it had been shadowing until a British
battlecruiser HMS
Leopard, can rendezvous with it so they can attack it together.
Rutland is sunk, and Brown and a shipmate are rescued and taken prisoner aboard
Zeithen. However,
Rutland had succeeded in damaging
Zeithen, so its captain plans to pull into an isolated anchorage at the remote
Galápagos island of Resolution to repair the vessel. There, the resourceful Brown escapes, steals a rifle and a small amount of ammunition, and makes his way ashore. From there, he picks off exposed crewmen trying to repair the punctured hull plates on
Zeithen, hoping to delay it until
Leopard, which is commanded by Captain Summerville, arrives.
Zeithen's
main battery bombards the island but Brown is able to hide in the rocks. A shore party is sent to the island and Brown is eventually hit by a German shot, from which he later dies, never learning that his actions did delay the repairs long enough for
Leopard to arrive and destroy
Zeithen in an exchange of fire. The German captain is taken prisoner and reveals what delayed him, but also that his son, who was serving with him, did not survive. Brown's body and belongings are recovered and he is buried on the island, where the British erect a cross on the highest point to commemorate him. Aboard
Leopard, Captain Summerville looks through Brown's belongings and sees the watch that he had once given to Betty; he realizes that Albert Brown was his son, so both captains lost their sons in the battle. ==Cast==