Prehistorical life is tough for poor, lovesick Atouk. As the smallest and weakest caveman of his tribe, he is unable to win the heart of the beautiful Lana and is banished from the cave by the hulking chief of the tribe.

Agent 007 joins forces with a beautiful Russian agent to battle a mad genius, multi-millionaire shipping magnate Karl Stromberg. Stromberg plans to destroy the earth and rebuild it underwater, and is in possession of an ultra-sensitive submarine tracking system which he seems to be offering to the highest bidder. After he captures a British submarine, Bond's job is to recover the tracking device and free the submarine.