Hans Nemesis steals a mobile nuclear missile launcher from the British government while being followed by British secret agent Endeavour Chambers. Nemesis' plans, however, are foiled by the protagonist who stops the missile from launching on the order of Chamber's superiors, believing him to be the agent after finding the two ICBM codes in two cars travelling around London.
After trying to blow up nuclear missiles, Hans prepared to poison London's tea supply. The protagonist then is told to take the stolen sugar from Hans and exterminate some of his men. After the defeat of his plan, Hans confronts the protagonist in a wheelchair, then takes his own life.
Nothing much is revealed of Nemesis; neither what his real name is, or what his motivations are in wanting to blow up Britain. He is described as "genocidal" and "megalomaniacal", but beyond this there are no other clues to his politics.
Nemesis shares many traits with a stereotypical villain from the James Bond films.His dialogue indicates that he has had many cat-and-mouse chases with secret agent Endeavour Chambers, and enough close calls in the past to say that he knows him well. He also seems to enjoy playing life-or-death "games" with the secret agent, and the secret agent has fallen for these plans many times, with Nemesis believing himself more intelligent. Also,his death is similar to James Bond's nemesis, Ernst Stavro Blofeld.