Dashing pirate Geoffrey Thorpe plunders Spanish ships for Queen Elizabeth I and falls in love with Dona Maria, a beautiful Spanish royal he captures.
The quiet village of Bramley End is taken over by German troops posing as Royal Engineers. Their task is to disrupt England's radar network in preparation for a full scale German invasion. Once the villagers discover the true identity of the troops, they do whatever they can to thwart the Nazis plans.
The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.