In the London of 1537, two boys resembling each other exactly meet accidentally and exchange "roles" for a short while. After many adventures, the prince regains his rightful identity and graciously makes his "twin" a ward of the court.

Jewel thieves, murder, and a manhunt swirl around a sailor off a cargo ship in post-war London.

A criminal organization has obtained two nuclear bombs and are asking for a 100 million pound ransom in the form of diamonds in seven days or they will use the weapons. The secret service sends James Bond to the Bahamas to once again save the world.