C.R. "Mac" MacNamara is a high-ranking executive in the Coca-Cola Company, assigned to West Berlin after a business fiasco a few years earlier in the Middle East (about which he is still bitter). While based in West Germany for now, Mac is angling to become head of Western European Coca-Cola Operations, based in London. After working on an arrangement to introduce Coke into the Soviet Union, Mac receives a call from his boss, W.P. Hazeltine, at Coca-Cola headquarters in Atlanta. Scarlett Hazeltine, the boss's hot-blooded but slightly dim 17-year-old socialite daughter, is coming to West Berlin. Mac is assigned the unenviable task of taking care of this young whirlwind.