Ernst Blofeld, head of SPECTRE, wants James Bond dead. He sets a trap that he is convinced Agent 007 will fall for. He enlists the services of his organisation's number three, Rosa Klebb, a senior KGB officer. She sends her agent Tatyana Romanov into action as bait.
Romanov is to convince MI6 that she has fallen in love with James Bond and is prepared to defect with a valuable decryption device if her hero comes to Istanbul to get her. Romanov has no idea that she is a tool in the hands of SPECTR, who want to stir up a feud between the British and the Russians, sell the device at a profit back to the Soviets, and lure Bond into a death trap.