After the wedding-day murder of his wife, Tracy (see "On Her Majesty's Secret Service)", Bond begins to let his life slide, drinking and gambling heavily, making mistakes and turning up late for work. His superior in the Secret Service, M, had been planning to dismiss Bond, but decides to give him a last-chance opportunity to redeem himself by assigning him to the diplomatic branch of the organisation. Bond is subsequently re-numbered 7777 and handed an "impossible" mission: convincing the head of Japan's secret intelligence service, Tiger Tanaka, to provide Britain with information from radio transmissions captured from the Soviet Union, codenamed "Magic 44". In exchange, the Secret Service will allow the Japanese access to one of their own information sources.