Tell the other guy to move over! I'm Number One.
Several eminent men in high finance have been murdered. No. 1 is called in to his superior's office at M.I.5 and told to get to the bottom of it. A beautiful female agent named Anna is assigned to No. 1. Together they set about searching for the villain who turns out to be a millionaire named Arthur Loveday. Loveday quite openly admits to having a long list of men in high finance that he wants to see dead, he challenges No. 1 to try and stop him. No. 1 and Anna are led through a series of escapades with No. 1 fighting for his life, Loveday by now is determined to get No. 1 and contracts professional killers and even mercenaries to dispose of him. No. 1 and Anna both survive these attempts on their lives but still cannot get to the bottom of Loveday's planned executions or indeed stop the killings even knowing who each victim is and when he will be killed. After a thrilling finale in which No. 1 faces Loveday's key executioner and survives, No. 1 is then forced to play a game of Russian Roulette with Loveday, during this tense and deadly game Loveday reveals his ingenious formula for murder just before his luck runs out.