What is the main conflict in Goldfinger by Ian Fleming?

Bond works for the British Secret Service and is one of the elite "00" operatives with a "license to kill." After breaking up a heroin smuggling ring, Bond crosses paths in Miami with a British millionaire, Auric Goldfinger, who is obsessed with gold and has hoarded away enormous quantities of it. Under cover, Bond eventually gets closer to Goldfinger and becomes part of his outrageous scheme to rob Fort Knox of its gold.