Plot
To avenge Tracy, James Bond hunts Ernst Stavro Blofeld. At a facility where Blofeld lookalikes are being created through plastic surgery, Bond kills a test subject and later the "real" Blofeld.
While the assassins Mr. Wint and Mr. Kidd kill people involved in a diamond-smuggling operation, M suspects that South African diamonds are being stockpiled to depress prices by dumping and assigns Bond to uncover the smuggling ring. Impersonating the smuggler Peter Franks, Bond travels to Amsterdam to meet the contact Tiffany Case. Bond kills the real Franks, then switches IDs to fake his own death and assume Franks' identity. Tiffany and Bond go to Los Angeles, smuggling the diamonds inside Franks' corpse.
At the airport, Bond meets his Central Intelligence Agency (CIA) contact Felix Leiter and travels to Las Vegas. At a funeral home operating in the smuggling ring, Franks' body is cremated, and the diamonds are passed on to the smuggler Shady Tree. The funeral home operator, Morton Slumber, double-crosses Bond, and Wint and Kidd try to cremate him alive. However, Tree stops the process after discovering that the diamonds in Franks' body were fake, planted by Bond and the CIA. Bond tells Leiter to ship the real diamonds. At the Whyte House, a casino and hotel owned by the billionaire Willard Whyte, Tree works as a stand-up comedian. Tree is killed by Wint and Kidd, who do not know the diamonds were fake.
At the craps table, Bond meets a woman named Plenty O'Toole, and later brings her to his room. Slumber's henchmen ambush them, throwing O'Toole out of the window and into the pool below. Bond instructs Tiffany to retrieve the diamonds at the Circus Circus casino. Tiffany reneges on her deal and flees, passing off the diamonds to the next smuggler. However, seeing that O'Toole was killed after being mistaken for her, Tiffany changes her mind. She drives Bond to the airport, where they see the diamonds given to Whyte's casino manager, Bert Saxby. Saxby later keeps a rendezvous with a scientist who takes the diamonds. The scientist goes to a remote research laboratory owned by Whyte, where a satellite is being built by a laser refraction specialist. Bond sneaks into the laboratory. However, after being caught, Bond escapes by stealing a moon buggy, fights his way out of the facility and reunites with Tiffany. Later in the evening, Bond and Tiffany evade the police in Las Vegas.
Bond climbs to the Whyte House's top floor to confront Whyte. He is instead met by two identical Blofelds, who use an electronic voice synthesiser to sound like Whyte when communicating with the outside world. Bond kills one of the Blofelds, who turns out to be a look-alike. He is then knocked out by gas, picked up by Wint and Kidd, taken out to Las Vegas Valley, placed in a pipeline and left to die. Bond escapes, then calls Blofeld, using another voice synthesiser to pose as Saxby. He locates Whyte's desert home, defeats bodyguards, and rescues Whyte. Meanwhile, Blofeld abducts Tiffany. With Whyte's help, Bond raids the laboratory and uncovers Blofeld's plot to use the diamonds to create a laser satellite, which has already been sent into orbit. With the satellite, Blofeld destroys nuclear weapons installations in the United States, the Soviet Union and China, then proposes an international auction for global nuclear supremacy.
Whyte identifies an oil rig off the coast of Baja California as Blofeld's base of operations. After Bond's attempt to change the cassette containing the satellite control codes fails, Leiter and the CIA launch a helicopter attack on the rig. Blofeld tries to escape in a midget submarine, but Bond gains control of its launch crane and uses the submarine as a wrecking ball, destroying the satellite control room, the base and presumably killing Blofeld for good. Bond and Tiffany head for Britain on an ocean liner, where Wint and Kidd pose as room-service waiters to serve them a dinner with a time-bomb hidden in a cake. Bond, however, unravels their disguise. They attack Bond, who sets Kidd on fire, making him jump overboard. Bond then throws Wint overboard holding the bomb, which explodes seconds after. Seeing Blofeld's satellite still in orbit in the sky, Tiffany asks Bond if they can get the diamonds back to Earth.